was the wife of president lincoln called mary?
PREFIX dbo: <http://dbpedia.org/ontology/> PREFIX res: <http://dbpedia.org/resource/> PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> ASK WHERE { res:Abraham_Lincoln dbo:spouse ?spouse . ?spouse rdfs:label ?name FILTER regex(?name, 'Mary') }
Abraham_Lincoln