Question: How many subjects have been covered in fantasy novels?
SPARQL query: SELECT DISTINCT COUNT(?uri) WHERE { ?x <http://dbpedia.org/ontology/literaryGenre> <http://dbpedia.org/resource/Fantasy> . ?x <http://dbpedia.org/ontology/nonFictionSubject> ?uri  . }
Answer: There are [295] nonfiction subjects of the books with fantasy genre.