@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix prov: <http://www.w3.org/ns/prov#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix spdx: <http://spdx.org/rdf/terms#> .
@prefix vcard: <http://www.w3.org/2006/vcard/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<http://data.europa.eu/nuts/code/SK0> a dct:Location .

<http://publications.europa.eu/resource/authority/data-theme/ENVI> a skos:Concept ;
    skos:prefLabel "Environment"@en .

<http://publications.europa.eu/resource/authority/file-type/GEOJSON> a dct:MediaTypeOrExtent .

<http://publications.europa.eu/resource/authority/file-type/MARKDOWN> a dct:MediaTypeOrExtent .

<http://publications.europa.eu/resource/authority/file-type/OWL> a dct:MediaTypeOrExtent .

<http://publications.europa.eu/resource/authority/file-type/YAML> a dct:MediaTypeOrExtent .

<http://publications.europa.eu/resource/authority/frequency/HOURLY> a dct:Frequency .

<http://www.iana.org/assignments/media-types/application/geo+json> a dct:MediaType .

<http://www.iana.org/assignments/media-types/application/ld+json> a dct:MediaType .

<http://www.iana.org/assignments/media-types/application/schema+json> a dct:MediaType .

<http://www.iana.org/assignments/media-types/text/csv> a dct:MediaType .

<http://www.iana.org/assignments/media-types/text/markdown> a dct:MediaType .

<http://www.iana.org/assignments/media-types/text/yaml> a dct:MediaType .

<http://www.opengis.net/doc/IS/ogcapi-features-1/1.0> a dct:Standard .

<https://api.smartcity.joinedcontext.com/api/endpoint/wtvuppkop6y3qv7bnvzqwifv4uts4e2k/> a foaf:Document .

<https://modelcontextprotocol.io/specification> a dct:Standard .

<https://opendata.smartcity.joinedcontext.com/dataset/6047ddf0-382c-4967-b531-c495fd40f42f/resource/040711fb-0309-47d1-9217-179ff76b6684> a dcat:Distribution ;
    dct:description "The data model as JSON Schema; sha256 f5b4ed05695fa574f22d6dd969a6bc75a26b1e20c4eb7904e4e99f6367a9b719." ;
    dct:format <http://publications.europa.eu/resource/authority/file-type/JSON> ;
    dct:issued "2026-09-28T00:00:00+00:00"^^xsd:dateTime ;
    dct:license <http://publications.europa.eu/resource/authority/licence/CC_BY_4_0> ;
    dct:modified "2026-10-20T10:43:39.916054"^^xsd:dateTime ;
    dct:rights [ a dct:RightsStatement ;
            rdfs:label "Európska environmentálna agentúra (EEA), údaje Slovenského hydrometeorologického ústavu (SHMÚ), CC BY 4.0" ] ;
    dct:title "ovzdusie-sk model.schema.json" ;
    spdx:checksum [ a spdx:Checksum ;
            spdx:algorithm spdx:checksumAlgorithm_sha256 ;
            spdx:checksumValue "f5b4ed05695fa574f22d6dd969a6bc75a26b1e20c4eb7904e4e99f6367a9b719"^^xsd:hexBinary ] ;
    dcat:accessURL <https://api.smartcity.joinedcontext.com/api/endpoint/wtvuppkop6y3qv7bnvzqwifv4uts4e2k/schema/v1/model.schema.json> ;
    dcat:byteSize "1734"^^xsd:nonNegativeInteger ;
    dcat:mediaType <http://www.iana.org/assignments/media-types/application/schema+json> .

<https://opendata.smartcity.joinedcontext.com/dataset/6047ddf0-382c-4967-b531-c495fd40f42f/resource/0a05f807-7cd7-41b2-b068-54ea3f838da1> a dcat:Distribution ;
    dct:description "The data model as JSON-LD; sha256 e4c5db90fd90a313ec7a259198813b29aa4076003850f3c5b5ed441039a81e8f." ;
    dct:format <http://publications.europa.eu/resource/authority/file-type/JSON_LD> ;
    dct:issued "2026-09-28T00:00:00+00:00"^^xsd:dateTime ;
    dct:license <http://publications.europa.eu/resource/authority/licence/CC_BY_4_0> ;
    dct:modified "2026-10-20T10:43:39.915848"^^xsd:dateTime ;
    dct:rights [ a dct:RightsStatement ;
            rdfs:label "Európska environmentálna agentúra (EEA), údaje Slovenského hydrometeorologického ústavu (SHMÚ), CC BY 4.0" ] ;
    dct:title "ovzdusie-sk context.jsonld" ;
    spdx:checksum [ a spdx:Checksum ;
            spdx:algorithm spdx:checksumAlgorithm_sha256 ;
            spdx:checksumValue "e4c5db90fd90a313ec7a259198813b29aa4076003850f3c5b5ed441039a81e8f"^^xsd:hexBinary ] ;
    dcat:accessURL <https://api.smartcity.joinedcontext.com/api/endpoint/wtvuppkop6y3qv7bnvzqwifv4uts4e2k/schema/v1/context.jsonld> ;
    dcat:byteSize "839"^^xsd:nonNegativeInteger ;
    dcat:mediaType <http://www.iana.org/assignments/media-types/application/ld+json> .

<https://opendata.smartcity.joinedcontext.com/dataset/6047ddf0-382c-4967-b531-c495fd40f42f/resource/15fbc444-4b0d-402d-9371-afa0cfa04bdd> a dcat:Distribution ;
    dct:description "The data model in every formalism, for every model version, each artifact with its sha256 (EP-68)." ;
    dct:format <http://publications.europa.eu/resource/authority/file-type/JSON> ;
    dct:issued "2026-09-28T00:00:00+00:00"^^xsd:dateTime ;
    dct:license <http://publications.europa.eu/resource/authority/licence/CC_BY_4_0> ;
    dct:modified "2026-10-20T10:43:39.915810"^^xsd:dateTime ;
    dct:rights [ a dct:RightsStatement ;
            rdfs:label "Európska environmentálna agentúra (EEA), údaje Slovenského hydrometeorologického ústavu (SHMÚ), CC BY 4.0" ] ;
    dct:title "Schema artifacts" ;
    dcat:accessURL <https://api.smartcity.joinedcontext.com/api/endpoint/wtvuppkop6y3qv7bnvzqwifv4uts4e2k/schema/index.json> ;
    dcat:mediaType <http://www.iana.org/assignments/media-types/application/json> .

<https://opendata.smartcity.joinedcontext.com/dataset/6047ddf0-382c-4967-b531-c495fd40f42f/resource/268d6d69-e9dc-4956-b34d-01e0fe374499> a dcat:Distribution ;
    dct:description "The data model as Markdown; sha256 098d4cac5a93e62e29d32911dde0a3da81cb6ba7422776ee1d386a8fa2005bd2." ;
    dct:format <http://publications.europa.eu/resource/authority/file-type/MARKDOWN> ;
    dct:issued "2026-09-28T00:00:00+00:00"^^xsd:dateTime ;
    dct:license <http://publications.europa.eu/resource/authority/licence/CC_BY_4_0> ;
    dct:modified "2026-10-20T10:43:39.915943"^^xsd:dateTime ;
    dct:rights [ a dct:RightsStatement ;
            rdfs:label "Európska environmentálna agentúra (EEA), údaje Slovenského hydrometeorologického ústavu (SHMÚ), CC BY 4.0" ] ;
    dct:title "ovzdusie-sk model.md" ;
    spdx:checksum [ a spdx:Checksum ;
            spdx:algorithm spdx:checksumAlgorithm_sha256 ;
            spdx:checksumValue "098d4cac5a93e62e29d32911dde0a3da81cb6ba7422776ee1d386a8fa2005bd2"^^xsd:hexBinary ] ;
    dcat:accessURL <https://api.smartcity.joinedcontext.com/api/endpoint/wtvuppkop6y3qv7bnvzqwifv4uts4e2k/schema/v1/model.md> ;
    dcat:byteSize "966"^^xsd:nonNegativeInteger ;
    dcat:mediaType <http://www.iana.org/assignments/media-types/text/markdown> .

<https://opendata.smartcity.joinedcontext.com/dataset/6047ddf0-382c-4967-b531-c495fd40f42f/resource/4e5c7339-0969-4046-9231-21ab8c09bfbc> a dcat:Distribution ;
    dct:description "The data model as RDF; sha256 2429a138e652a093d684433ca80bf5f211bb9e1a9fa05419136adc6a2bffe0c5." ;
    dct:format <http://publications.europa.eu/resource/authority/file-type/RDF_TURTLE> ;
    dct:issued "2026-09-28T00:00:00+00:00"^^xsd:dateTime ;
    dct:license <http://publications.europa.eu/resource/authority/licence/CC_BY_4_0> ;
    dct:modified "2026-10-20T10:43:39.916015"^^xsd:dateTime ;
    dct:rights [ a dct:RightsStatement ;
            rdfs:label "Európska environmentálna agentúra (EEA), údaje Slovenského hydrometeorologického ústavu (SHMÚ), CC BY 4.0" ] ;
    dct:title "ovzdusie-sk model.rdf.ttl" ;
    spdx:checksum [ a spdx:Checksum ;
            spdx:algorithm spdx:checksumAlgorithm_sha256 ;
            spdx:checksumValue "2429a138e652a093d684433ca80bf5f211bb9e1a9fa05419136adc6a2bffe0c5"^^xsd:hexBinary ] ;
    dcat:accessURL <https://api.smartcity.joinedcontext.com/api/endpoint/wtvuppkop6y3qv7bnvzqwifv4uts4e2k/schema/v1/model.rdf.ttl> ;
    dcat:byteSize "1031"^^xsd:nonNegativeInteger ;
    dcat:mediaType <http://www.iana.org/assignments/media-types/text/turtle> .

<https://opendata.smartcity.joinedcontext.com/dataset/6047ddf0-382c-4967-b531-c495fd40f42f/resource/50a4d9b4-fdad-43b0-bfeb-28cdae471aa5> a dcat:Distribution ;
    dct:description "The data model as SHACL; sha256 290948c2d8c5df3ebbfe85691652408603270dd00e46b2450210d166b14b2647." ;
    dct:format <http://publications.europa.eu/resource/authority/file-type/RDF_TURTLE> ;
    dct:issued "2026-09-28T00:00:00+00:00"^^xsd:dateTime ;
    dct:license <http://publications.europa.eu/resource/authority/licence/CC_BY_4_0> ;
    dct:modified "2026-10-20T10:43:39.916088"^^xsd:dateTime ;
    dct:rights [ a dct:RightsStatement ;
            rdfs:label "Európska environmentálna agentúra (EEA), údaje Slovenského hydrometeorologického ústavu (SHMÚ), CC BY 4.0" ] ;
    dct:title "ovzdusie-sk model.shacl.ttl" ;
    spdx:checksum [ a spdx:Checksum ;
            spdx:algorithm spdx:checksumAlgorithm_sha256 ;
            spdx:checksumValue "290948c2d8c5df3ebbfe85691652408603270dd00e46b2450210d166b14b2647"^^xsd:hexBinary ] ;
    dcat:accessURL <https://api.smartcity.joinedcontext.com/api/endpoint/wtvuppkop6y3qv7bnvzqwifv4uts4e2k/schema/v1/model.shacl.ttl> ;
    dcat:byteSize "2697"^^xsd:nonNegativeInteger ;
    dcat:mediaType <http://www.iana.org/assignments/media-types/text/turtle> .

<https://opendata.smartcity.joinedcontext.com/dataset/6047ddf0-382c-4967-b531-c495fd40f42f/resource/635616cb-1180-4664-baac-73cc3a460c57> a dcat:Distribution ;
    dct:description """A CSV table, generated on each download from the endpoint's live data.

    curl -o file.csv 'https://api.smartcity.joinedcontext.com/api/endpoint/wtvuppkop6y3qv7bnvzqwifv4uts4e2k/file.csv'

Open to anyone, with no sign-in.""" ;
    dct:format <http://publications.europa.eu/resource/authority/file-type/CSV> ;
    dct:issued "2026-09-28T00:00:00+00:00"^^xsd:dateTime ;
    dct:license <http://publications.europa.eu/resource/authority/licence/CC_BY_4_0> ;
    dct:modified "2026-10-20T10:43:39.915601"^^xsd:dateTime ;
    dct:rights [ a dct:RightsStatement ;
            rdfs:label "Európska environmentálna agentúra (EEA), údaje Slovenského hydrometeorologického ústavu (SHMÚ), CC BY 4.0" ] ;
    dct:title "CSV" ;
    dcat:accessURL <https://api.smartcity.joinedcontext.com/api/endpoint/wtvuppkop6y3qv7bnvzqwifv4uts4e2k/file.csv> ;
    dcat:mediaType <http://www.iana.org/assignments/media-types/text/csv> .

<https://opendata.smartcity.joinedcontext.com/dataset/6047ddf0-382c-4967-b531-c495fd40f42f/resource/664205ac-d090-4a27-a2b0-188f38a11621> a dcat:Distribution ;
    dct:description """For AI assistants: a Model Context Protocol server over this dataset's endpoint https://api.smartcity.joinedcontext.com/api/endpoint/wtvuppkop6y3qv7bnvzqwifv4uts4e2k. It answers anyone, with no sign-in, what the endpoint serves the public.

Tools: `query_entities` (the rows of an entity type, with an NGSI-LD `q` filter, `attrs`, `count` and paging), `get_entity` (one entity by its URN), `describe_schema` (the data model: read it first) and `describe_access` (what you may read).

Licence: Creative Commons Attribution 4.0; the data is reused under it.

An MCP client reaches it with this configuration:

    {"mcpServers":{"ovzdusie-sk":{"type":"http","url":"https://api.smartcity.joinedcontext.com/api/endpoint/wtvuppkop6y3qv7bnvzqwifv4uts4e2k/mcp"}}}
""" ;
    dct:format <http://publications.europa.eu/resource/authority/file-type/JSON> ;
    dct:issued "2026-09-28T00:00:00+00:00"^^xsd:dateTime ;
    dct:license <http://publications.europa.eu/resource/authority/licence/CC_BY_4_0> ;
    dct:modified "2026-10-20T10:43:39.915773"^^xsd:dateTime ;
    dct:rights [ a dct:RightsStatement ;
            rdfs:label "Európska environmentálna agentúra (EEA), údaje Slovenského hydrometeorologického ústavu (SHMÚ), CC BY 4.0" ] ;
    dct:title "Model Context Protocol" ;
    dcat:accessService [ a dcat:DataService ;
            dct:conformsTo <https://modelcontextprotocol.io/specification> ;
            dct:title "Model Context Protocol" ;
            dcat:endpointURL <https://api.smartcity.joinedcontext.com/api/endpoint/wtvuppkop6y3qv7bnvzqwifv4uts4e2k/mcp> ;
            dcat:servesDataset <https://opendata.smartcity.joinedcontext.com/dataset/6047ddf0-382c-4967-b531-c495fd40f42f> ] ;
    dcat:accessURL <https://api.smartcity.joinedcontext.com/api/endpoint/wtvuppkop6y3qv7bnvzqwifv4uts4e2k/mcp> ;
    dcat:mediaType <http://www.iana.org/assignments/media-types/application/json> .

<https://opendata.smartcity.joinedcontext.com/dataset/6047ddf0-382c-4967-b531-c495fd40f42f/resource/74c7c437-fbfd-41fe-9833-1ebe7c7c9f49> a dcat:Distribution ;
    dct:format <http://publications.europa.eu/resource/authority/file-type/CSV> ;
    dct:issued "2026-09-28T00:00:00+00:00"^^xsd:dateTime ;
    dct:license <http://publications.europa.eu/resource/authority/licence/CC_BY_4_0> ;
    dct:modified "2026-10-20T12:47:38.476088"^^xsd:dateTime ;
    dct:rights [ a dct:RightsStatement ;
            rdfs:label "Európska environmentálna agentúra (EEA), údaje Slovenského hydrometeorologického ústavu (SHMÚ), CC BY 4.0" ] ;
    dct:title "AirQualityObserved" ;
    dcat:accessURL <https://opendata.smartcity.joinedcontext.com/datastore/dump/74c7c437-fbfd-41fe-9833-1ebe7c7c9f49> .

<https://opendata.smartcity.joinedcontext.com/dataset/6047ddf0-382c-4967-b531-c495fd40f42f/resource/8055be41-669a-4b42-ba08-1db4851d4688> a dcat:Distribution ;
    dct:description "The data model as LinkML; sha256 3399b18d9bd7f2f5cbe7d5882e5118975c155daa92bcb1b8cee20f002feb3f8b." ;
    dct:format <http://publications.europa.eu/resource/authority/file-type/YAML> ;
    dct:issued "2026-09-28T00:00:00+00:00"^^xsd:dateTime ;
    dct:license <http://publications.europa.eu/resource/authority/licence/CC_BY_4_0> ;
    dct:modified "2026-10-20T10:43:39.915885"^^xsd:dateTime ;
    dct:rights [ a dct:RightsStatement ;
            rdfs:label "Európska environmentálna agentúra (EEA), údaje Slovenského hydrometeorologického ústavu (SHMÚ), CC BY 4.0" ] ;
    dct:title "ovzdusie-sk model.linkml.yaml" ;
    spdx:checksum [ a spdx:Checksum ;
            spdx:algorithm spdx:checksumAlgorithm_sha256 ;
            spdx:checksumValue "3399b18d9bd7f2f5cbe7d5882e5118975c155daa92bcb1b8cee20f002feb3f8b"^^xsd:hexBinary ] ;
    dcat:accessURL <https://api.smartcity.joinedcontext.com/api/endpoint/wtvuppkop6y3qv7bnvzqwifv4uts4e2k/schema/v1/model.linkml.yaml> ;
    dcat:byteSize "3848"^^xsd:nonNegativeInteger ;
    dcat:mediaType <http://www.iana.org/assignments/media-types/text/yaml> .

<https://opendata.smartcity.joinedcontext.com/dataset/6047ddf0-382c-4967-b531-c495fd40f42f/resource/81dee5d1-1213-4314-8c68-494815c90f38> a dcat:Distribution ;
    dct:description """OGC API - Features, read-only: Part 1 (Core: collections and items), Part 2 (coordinate reference systems by reference) and Part 3 (Filtering with CQL2). https://api.smartcity.joinedcontext.com/api/endpoint/wtvuppkop6y3qv7bnvzqwifv4uts4e2k/ogc/features/conformance lists the classes this endpoint serves. In QGIS: Layer, Add Layer, Add WFS / OGC API - Features Layer, a new connection with the URL https://api.smartcity.joinedcontext.com/api/endpoint/wtvuppkop6y3qv7bnvzqwifv4uts4e2k/ogc/features/. With curl:

    curl 'https://api.smartcity.joinedcontext.com/api/endpoint/wtvuppkop6y3qv7bnvzqwifv4uts4e2k/ogc/features/collections'

Always live: the catalogue holds this link, never a copy. Open to anyone, with no sign-in.

The fields it filters on and example queries that answered with this dataset's data: https://api.smartcity.joinedcontext.com/d/wtvuppkop6y3qv7bnvzqwifv4uts4e2k""" ;
    dct:format <http://publications.europa.eu/resource/authority/file-type/GEOJSON> ;
    dct:issued "2026-09-28T00:00:00+00:00"^^xsd:dateTime ;
    dct:license <http://publications.europa.eu/resource/authority/licence/CC_BY_4_0> ;
    dct:modified "2026-10-20T10:43:39.915700"^^xsd:dateTime ;
    dct:rights [ a dct:RightsStatement ;
            rdfs:label "Európska environmentálna agentúra (EEA), údaje Slovenského hydrometeorologického ústavu (SHMÚ), CC BY 4.0" ] ;
    dct:title "OGC API - Features" ;
    dcat:accessService [ a dcat:DataService ;
            dct:conformsTo <http://www.opengis.net/doc/IS/ogcapi-features-1/1.0> ;
            dct:title "OGC API - Features" ;
            dcat:endpointURL <https://api.smartcity.joinedcontext.com/api/endpoint/wtvuppkop6y3qv7bnvzqwifv4uts4e2k/ogc/features/> ;
            dcat:servesDataset <https://opendata.smartcity.joinedcontext.com/dataset/6047ddf0-382c-4967-b531-c495fd40f42f> ] ;
    dcat:accessURL <https://api.smartcity.joinedcontext.com/api/endpoint/wtvuppkop6y3qv7bnvzqwifv4uts4e2k/ogc/features/> ;
    dcat:mediaType <http://www.iana.org/assignments/media-types/application/geo+json> .

<https://opendata.smartcity.joinedcontext.com/dataset/6047ddf0-382c-4967-b531-c495fd40f42f/resource/8401e1ef-658b-4e47-ba2f-d3905dd3e65f> a dcat:Distribution ;
    dct:description "The data model as OWL; sha256 f6d01b5771a67a045fee544525923b9beb341e99fdf6d4bb2eb96d3163e0b2da." ;
    dct:format <http://publications.europa.eu/resource/authority/file-type/OWL> ;
    dct:issued "2026-09-28T00:00:00+00:00"^^xsd:dateTime ;
    dct:license <http://publications.europa.eu/resource/authority/licence/CC_BY_4_0> ;
    dct:modified "2026-10-20T10:43:39.915979"^^xsd:dateTime ;
    dct:rights [ a dct:RightsStatement ;
            rdfs:label "Európska environmentálna agentúra (EEA), údaje Slovenského hydrometeorologického ústavu (SHMÚ), CC BY 4.0" ] ;
    dct:title "ovzdusie-sk model.owl.ttl" ;
    spdx:checksum [ a spdx:Checksum ;
            spdx:algorithm spdx:checksumAlgorithm_sha256 ;
            spdx:checksumValue "f6d01b5771a67a045fee544525923b9beb341e99fdf6d4bb2eb96d3163e0b2da"^^xsd:hexBinary ] ;
    dcat:accessURL <https://api.smartcity.joinedcontext.com/api/endpoint/wtvuppkop6y3qv7bnvzqwifv4uts4e2k/schema/v1/model.owl.ttl> ;
    dcat:byteSize "1874"^^xsd:nonNegativeInteger ;
    dcat:mediaType <http://www.iana.org/assignments/media-types/text/turtle> .

<https://opendata.smartcity.joinedcontext.com/dataset/6047ddf0-382c-4967-b531-c495fd40f42f/resource/89db84fa-44d5-4927-b05b-8fbc9b3ced1e> a dcat:Distribution ;
    dct:description """OData v4, read-only: each entity type is an entity set, with $filter, $select, $orderby and $top. In Excel: Data, Get Data, From Other Sources, From OData Feed, then the URL https://api.smartcity.joinedcontext.com/api/endpoint/wtvuppkop6y3qv7bnvzqwifv4uts4e2k/odata/v4/. In Power BI: Get data, OData feed, the same URL. With curl:

    curl 'https://api.smartcity.joinedcontext.com/api/endpoint/wtvuppkop6y3qv7bnvzqwifv4uts4e2k/odata/v4/'

Always live: the catalogue holds this link, never a copy. Open to anyone, with no sign-in.

The fields it filters on and example queries that answered with this dataset's data: https://api.smartcity.joinedcontext.com/d/wtvuppkop6y3qv7bnvzqwifv4uts4e2k""" ;
    dct:issued "2026-09-28T00:00:00+00:00"^^xsd:dateTime ;
    dct:license <http://publications.europa.eu/resource/authority/licence/CC_BY_4_0> ;
    dct:modified "2026-10-20T10:43:39.915737"^^xsd:dateTime ;
    dct:rights [ a dct:RightsStatement ;
            rdfs:label "Európska environmentálna agentúra (EEA), údaje Slovenského hydrometeorologického ústavu (SHMÚ), CC BY 4.0" ] ;
    dct:title "OData v4" ;
    dcat:accessURL <https://api.smartcity.joinedcontext.com/api/endpoint/wtvuppkop6y3qv7bnvzqwifv4uts4e2k/odata/v4/> ;
    dcat:mediaType <http://www.iana.org/assignments/media-types/application/json> .

<https://opendata.smartcity.joinedcontext.com/dataset/6047ddf0-382c-4967-b531-c495fd40f42f/resource/8d97bce4-2c8d-4143-9ff0-c7148cfa821a> a dcat:Distribution ;
    dct:description """Live updates: open one WebSocket, subscribe to the entities you want, and each change arrives as a message, with no server of your own. With websocat, then type the subscription:

    websocat --protocol ngsi-ld-ws 'wss://api.smartcity.joinedcontext.com/api/endpoint/wtvuppkop6y3qv7bnvzqwifv4uts4e2k/ws'
    {"metadata":{"x-op":"x-subscribe","x-id":"s1"},"body":{"type":"Subscription","entities":[{"type":"AirQualityObserved"}]}}

Always live: the catalogue holds this link, never a copy. Open to anyone, with no sign-in.

The message format, the limits and examples in JavaScript and Python: https://smartcity.joinedcontext.com/docs/API/07-websocket""" ;
    dct:issued "2026-09-28T00:00:00+00:00"^^xsd:dateTime ;
    dct:license <http://publications.europa.eu/resource/authority/licence/CC_BY_4_0> ;
    dct:modified "2026-10-20T10:43:39.915658"^^xsd:dateTime ;
    dct:rights [ a dct:RightsStatement ;
            rdfs:label "Európska environmentálna agentúra (EEA), údaje Slovenského hydrometeorologického ústavu (SHMÚ), CC BY 4.0" ] ;
    dct:title "Live updates over WebSocket" ;
    dcat:accessURL <https://api.smartcity.joinedcontext.com/api/endpoint/wtvuppkop6y3qv7bnvzqwifv4uts4e2k/ws> ;
    dcat:mediaType <http://www.iana.org/assignments/media-types/application/json> .

<https://opendata.smartcity.joinedcontext.com/dataset/6047ddf0-382c-4967-b531-c495fd40f42f/resource/eb306934-c35e-45ed-a9c1-a7f9158a380e> a dcat:Distribution ;
    dct:description """The NGSI-LD API (ETSI GS CIM 009) of this dataset: query, filter and page its entities. The first ten AirQualityObserved entities:

    curl -H 'Accept: application/ld+json' 'https://api.smartcity.joinedcontext.com/api/endpoint/wtvuppkop6y3qv7bnvzqwifv4uts4e2k/ngsi-ld/v1/entities?type=AirQualityObserved&limit=10'

Always live: the catalogue holds this link, never a copy. Open to anyone, with no sign-in.

The fields it filters on and example queries that answered with this dataset's data: https://api.smartcity.joinedcontext.com/d/wtvuppkop6y3qv7bnvzqwifv4uts4e2k""" ;
    dct:format <http://publications.europa.eu/resource/authority/file-type/JSON_LD> ;
    dct:issued "2026-09-28T00:00:00+00:00"^^xsd:dateTime ;
    dct:license <http://publications.europa.eu/resource/authority/licence/CC_BY_4_0> ;
    dct:modified "2026-10-20T10:43:39.915526"^^xsd:dateTime ;
    dct:rights [ a dct:RightsStatement ;
            rdfs:label "Európska environmentálna agentúra (EEA), údaje Slovenského hydrometeorologického ústavu (SHMÚ), CC BY 4.0" ] ;
    dct:title "NGSI-LD API" ;
    dcat:accessService [ a dcat:DataService ;
            dct:conformsTo <https://www.etsi.org/deliver/etsi_gs/CIM/001_099/009/> ;
            dct:title "NGSI-LD API" ;
            dcat:endpointURL <https://api.smartcity.joinedcontext.com/api/endpoint/wtvuppkop6y3qv7bnvzqwifv4uts4e2k/ngsi-ld/v1/> ;
            dcat:servesDataset <https://opendata.smartcity.joinedcontext.com/dataset/6047ddf0-382c-4967-b531-c495fd40f42f> ] ;
    dcat:accessURL <https://api.smartcity.joinedcontext.com/api/endpoint/wtvuppkop6y3qv7bnvzqwifv4uts4e2k/ngsi-ld/v1/> ;
    dcat:mediaType <http://www.iana.org/assignments/media-types/application/json> .

<https://smartcity.joinedcontext.com/> a foaf:Agent ;
    foaf:name "Platforma joinedcontext" .

<https://www.etsi.org/deliver/etsi_gs/CIM/001_099/009/> a dct:Standard .

<https://www.w3.org/TR/json-ld11/> a dct:Standard .

<http://publications.europa.eu/resource/authority/file-type/CSV> a dct:MediaTypeOrExtent .

<http://publications.europa.eu/resource/authority/file-type/JSON_LD> a dct:MediaTypeOrExtent .

<http://publications.europa.eu/resource/authority/file-type/RDF_TURTLE> a dct:MediaTypeOrExtent .

<https://api.smartcity.joinedcontext.com/api/endpoint/wtvuppkop6y3qv7bnvzqwifv4uts4e2k/mcp> a rdfs:Resource .

<https://api.smartcity.joinedcontext.com/api/endpoint/wtvuppkop6y3qv7bnvzqwifv4uts4e2k/ngsi-ld/v1/> a rdfs:Resource .

<https://api.smartcity.joinedcontext.com/api/endpoint/wtvuppkop6y3qv7bnvzqwifv4uts4e2k/ogc/features/> a rdfs:Resource .

<http://publications.europa.eu/resource/authority/file-type/JSON> a dct:MediaTypeOrExtent .

<http://www.iana.org/assignments/media-types/text/turtle> a dct:MediaType .

<https://opendata.smartcity.joinedcontext.com/dataset/6047ddf0-382c-4967-b531-c495fd40f42f> a dcat:Dataset ;
    dct:accrualPeriodicity <http://publications.europa.eu/resource/authority/frequency/HOURLY> ;
    dct:conformsTo <https://www.w3.org/TR/json-ld11/> ;
    dct:description "Hodinové koncentrácie PM10, PM2,5, NO2 a O3 na všetkých staniciach monitorovania kvality ovzdušia na Slovensku, jedna položka na stanicu s poslednou nameranou hodinou a históriou za 7 dní." ;
    dct:identifier "wtvuppkop6y3qv7bnvzqwifv4uts4e2k" ;
    dct:issued "2026-09-28T00:00:00+00:00"^^xsd:dateTime ;
    dct:modified "2026-10-20T12:47:38.463497"^^xsd:dateTime ;
    dct:publisher <https://smartcity.joinedcontext.com/> ;
    dct:spatial <http://data.europa.eu/nuts/code/SK0> ;
    dct:title "Kvalita ovzdušia — Slovensko" ;
    dcat:contactPoint [ a vcard:Kind,
                vcard:Organization ;
            vcard:fn "joinedcontext" ;
            vcard:hasEmail <mailto:hello@joinedcontext.com> ] ;
    dcat:distribution <https://opendata.smartcity.joinedcontext.com/dataset/6047ddf0-382c-4967-b531-c495fd40f42f/resource/040711fb-0309-47d1-9217-179ff76b6684>,
        <https://opendata.smartcity.joinedcontext.com/dataset/6047ddf0-382c-4967-b531-c495fd40f42f/resource/0a05f807-7cd7-41b2-b068-54ea3f838da1>,
        <https://opendata.smartcity.joinedcontext.com/dataset/6047ddf0-382c-4967-b531-c495fd40f42f/resource/15fbc444-4b0d-402d-9371-afa0cfa04bdd>,
        <https://opendata.smartcity.joinedcontext.com/dataset/6047ddf0-382c-4967-b531-c495fd40f42f/resource/268d6d69-e9dc-4956-b34d-01e0fe374499>,
        <https://opendata.smartcity.joinedcontext.com/dataset/6047ddf0-382c-4967-b531-c495fd40f42f/resource/4e5c7339-0969-4046-9231-21ab8c09bfbc>,
        <https://opendata.smartcity.joinedcontext.com/dataset/6047ddf0-382c-4967-b531-c495fd40f42f/resource/50a4d9b4-fdad-43b0-bfeb-28cdae471aa5>,
        <https://opendata.smartcity.joinedcontext.com/dataset/6047ddf0-382c-4967-b531-c495fd40f42f/resource/635616cb-1180-4664-baac-73cc3a460c57>,
        <https://opendata.smartcity.joinedcontext.com/dataset/6047ddf0-382c-4967-b531-c495fd40f42f/resource/664205ac-d090-4a27-a2b0-188f38a11621>,
        <https://opendata.smartcity.joinedcontext.com/dataset/6047ddf0-382c-4967-b531-c495fd40f42f/resource/74c7c437-fbfd-41fe-9833-1ebe7c7c9f49>,
        <https://opendata.smartcity.joinedcontext.com/dataset/6047ddf0-382c-4967-b531-c495fd40f42f/resource/8055be41-669a-4b42-ba08-1db4851d4688>,
        <https://opendata.smartcity.joinedcontext.com/dataset/6047ddf0-382c-4967-b531-c495fd40f42f/resource/81dee5d1-1213-4314-8c68-494815c90f38>,
        <https://opendata.smartcity.joinedcontext.com/dataset/6047ddf0-382c-4967-b531-c495fd40f42f/resource/8401e1ef-658b-4e47-ba2f-d3905dd3e65f>,
        <https://opendata.smartcity.joinedcontext.com/dataset/6047ddf0-382c-4967-b531-c495fd40f42f/resource/89db84fa-44d5-4927-b05b-8fbc9b3ced1e>,
        <https://opendata.smartcity.joinedcontext.com/dataset/6047ddf0-382c-4967-b531-c495fd40f42f/resource/8d97bce4-2c8d-4143-9ff0-c7148cfa821a>,
        <https://opendata.smartcity.joinedcontext.com/dataset/6047ddf0-382c-4967-b531-c495fd40f42f/resource/eb306934-c35e-45ed-a9c1-a7f9158a380e> ;
    dcat:keyword "NO2",
        "PM10",
        "PM2 5",
        "PM2.5",
        "Slovakia",
        "Slovensko",
        "air quality",
        "kvalita ovzdušia",
        "ozone",
        "ozón" ;
    dcat:landingPage <https://api.smartcity.joinedcontext.com/api/endpoint/wtvuppkop6y3qv7bnvzqwifv4uts4e2k/> ;
    dcat:theme <http://publications.europa.eu/resource/authority/data-theme/ENVI> ;
    prov:wasGeneratedBy [ a prov:Activity ;
            rdfs:label "pipeline ovzdusie" ] .

<http://www.iana.org/assignments/media-types/application/json> a dct:MediaType .

spdx:checksumAlgorithm_sha256 a spdx:ChecksumAlgorithm .

<http://publications.europa.eu/resource/authority/licence/CC_BY_4_0> a dct:LicenseDocument .

