Question: Give me a count of all the producers of all the movies whose music was done by James Horner?
SPARQL query: SELECT DISTINCT COUNT(?uri) WHERE { ?x <http://dbpedia.org/property/music> <http://dbpedia.org/resource/James_Horner> . ?x <http://dbpedia.org/property/producer> ?uri  . }
Answer: There are [278] producers of the movies whose music was from James Horner.