Question: How many people were in a youthclub which played in the Argentine Primera Division?
SPARQL query: SELECT DISTINCT COUNT(?uri) WHERE { ?x <http://dbpedia.org/property/league> <http://dbpedia.org/resource/Argentine_Primera_División> . ?uri <http://dbpedia.org/property/youthclubs> ?x  . }
Answer: There are [1007] people whose youth clubs played in Argentine Primera Division league.