http://fsteeg.com/notes/from-rdf-to-json-with-json-ld

https://derwen.ai/docs/kgl/ex1_0/

```sparql PREFIX wd: http://www.wikidata.org/entity/ PREFIX wdt: http://www.wikidata.org/prop/direct/ PREFIX wikibase: http://wikiba.se/ontology# PREFIX p: http://www.wikidata.org/prop/ PREFIX ps: http://www.wikidata.org/prop/statement/ PREFIX pq: http://www.wikidata.org/prop/qualifier/ PREFIX bd: http://www.bigdata.com/rdf# PREFIX owl: http://www.w3.org/2002/07/owl# PREFIX rdfs: http://www.w3.org/2000/01/rdf-schema# PREFIX foaf: http://xmlns.com/foaf/0.1/ PREFIX dct: http://purl.org/dc/terms/SELECT DISTINCT ?dbpediaID AS ?href xsd:string(?label) AS ?name ?description ?subjectText ?item AS ?wikidataID ?dbpediaID ?image ?picture WHERE { SERVICE http://query.wikidata.org/sparql { SELECT DISTINCT ?item ?itemLabel ?numero ( SAMPLE(?pic) AS ?picture ) WHERE { ?item p:P528 ?catalogStatement . ?catalogStatement ps:P528 ?numero . ?catalogStatement pq:P972 wd:Q14530 . OPTIONAL { ?item wdt:P18 ?pic } . SERVICE wikibase:label { bd:serviceParam wikibase:language "en" } } GROUP BY ?item ?itemLabel ?numero ORDER BY ?numero }

SERVICE <http://dbpedia.org/sparql>
  { 
    SELECT ?item
           ?dbpediaID
           ?label
           ?image
           ?description
           ?subjectText
    FROM  <http://dbpedia.org> 
    WHERE
      {
        ?dbpediaID  owl:sameAs      ?item ; 
                    rdfs:label      ?label ; 
                    foaf:depiction  ?image ;
                    rdfs:comment    ?description ;
                    dct:subject
                      [ rdfs:label  ?subjectText ] .
        FILTER ( LANG(?label) = "en" ) 
        FILTER ( LANG(?description) = "en" ) 
      }
  }

} ```

https://research.vu.nl/en/publications/on-the-impact-of-sameas-on-schema-matching