ExampleQuery.rq

PREFIX rdf:    <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX rdfs:   <http://www.w3.org/2000/01/rdf-schema#>
PREFIX owl:    <http://www.w3.org/2002/07/owl#>
PREFIX dbo:    <http://dbpedia.org/ontology/>

SELECT * WHERE {
	SERVICE <http://dbpedia.org/sparql> {
		<http://dbpedia.org/resource/Berlin> dbo:country ?c .
		?c owl:sameAs ?cc
	}
	SERVICE <https://query.wikidata.org/sparql> {
		?cc rdfs:label ?o
	}
}

# An example query that must take into account vocabulary mappings
#SELECT * WHERE {
#    SERVICE <https://query.wikidata.org/sparql> {
#        ?pablo rdfs:label "Pablo Picasso"@en .
#        ?pablo <https://schema.org/hasOccupation> ?artist .
#    }
#    SERVICE <http://dbpedia.org/sparql> {
#        ?person rdf:type ?artist .
#        ?person <https://schema.org/birthPlace> <http://dbpedia.org/resource/Spain> .
#    }
#}
#limit 3

# Expected results:
#-------------------------------------------------------------------------------------------------------------------------
#| pablo                                  | artist                      | person                                         |
#=========================================================================================================================
#| <http://www.wikidata.org/entity/Q5593> | <https://schema.org/artist> | <http://dbpedia.org/resource/Carles_Canut>     |
#| <http://www.wikidata.org/entity/Q5593> | <https://schema.org/artist> | <http://dbpedia.org/resource/Carles_Casagemas> |
#| <http://www.wikidata.org/entity/Q5593> | <https://schema.org/artist> | <http://dbpedia.org/resource/Carlos_Albert>    |
#-------------------------------------------------------------------------------------------------------------------------