Question: How many game series exist for iOS?
SPARQL query: SELECT DISTINCT COUNT(?uri) WHERE { ?x <http://dbpedia.org/ontology/computingPlatform> <http://dbpedia.org/resource/IOS> . ?x <http://dbpedia.org/ontology/series> ?uri  . }
Answer: There are [413] series of the video games whose game platform is IOS .