Question: Which U.S. states possess gold minerals?
SPARQL query:
PREFIX yago: <http://dbpedia.org/class/yago/> PREFIX prop: <http://dbpedia.org/property/> PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> SELECT DISTINCT ?uri ?string WHERE { ?uri rdf:type yago:StatesOfTheUnitedStates . ?uri prop:mineral ?mineral . FILTER (regex(?mineral,'Gold')) . OPTIONAL { ?uri rdfs:label ?string. FILTER (lang(?string) = 'en') } }