which u.s. states possess gold minerals?
PREFIX yago: <http://dbpedia.org/class/yago/> PREFIX dbp: <http://dbpedia.org/property/> PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> SELECT DISTINCT ?uri WHERE { ?uri rdf:type yago:WikicatStatesOfTheUnitedStates ; dbp:mineral ?mineral FILTER regex(?mineral, 'gold', 'i') }