Question: To how many different species does the members of the Animal Kingdom belong?
SPARQL:
SELECT DISTINCT COUNT(?uri) WHERE { ?x <http://dbpedia.org/ontology/kingdom> <http://dbpedia.org/resource/Animal> . ?x <http://dbpedia.org/ontology/species> ?uri  . ?uri <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/Species>}