Question: Who has been the 5th president of the United states of America?
SPARQL query:
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> PREFIX onto: <http://dbpedia.org/ontology/> PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> SELECT ?uri ?string WHERE { ?uri rdf:type onto:President . ?uri onto:orderInOffice "5th President of the United States"@en . OPTIONAL {?uri rdfs:label ?string .} FILTER (lang(?string) = "en") }