SELECT DISTINCT ?uri WHERE {?uri <http://dbpedia.org/ontology/child> <http://dbpedia.org/resource/Edith_Vonnegut> . ?uri <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/Writer>}
Who is the father of Edith Vonnegut and is also a writer?
SELECT DISTINCT ?e WHERE { ?e rdf:type ontology:Writer . ?e property:child resource:Edith_Vonnegut }
Kurt Vonnegut
[Kurt Vonnegut] is the writer whose daughter is Edith Vonnegut .
[Kurt Cobain] is a writer having her as daughter.