Question: Name a fictional character whose relative is Uncle Henry and species is Human?
SPARQL:
SELECT DISTINCT ?uri WHERE {?uri <http://dbpedia.org/ontology/relative> <http://dbpedia.org/resource/Uncle_Henry_(Oz)> . ?uri <http://dbpedia.org/ontology/species> <http://dbpedia.org/resource/Human>  . ?uri <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/FictionalCharacter>}