Question: Give me all presidents of the United States.
SPARQL:
PREFIX yago: <http://dbpedia.org/class/yago/> PREFIX dbo: <http://dbpedia.org/ontology/> PREFIX dbp: <http://dbpedia.org/property/> PREFIX res: <http://dbpedia.org/resource/> PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> SELECT DISTINCT ?uri WHERE { ?uri rdf:type dbo:Person . { ?uri rdf:type yago:PresidentsOfTheUnitedStates. } UNION { ?uri rdf:type dbo:President. ?uri dbp:title res:President_of_the_United_States. } }