SELECT DISTINCT COUNT(?uri) WHERE { ?x <http://dbpedia.org/property/ground> <http://dbpedia.org/resource/Rosario,_Santa_Fe> . ?uri <http://dbpedia.org/property/youthclubs> ?x . }
Count all those who've played for the youth club which owns the Rosario, Santa Fe stadium.
SELECT DISTINCT COUNT ( ?b ) WHERE { ?l property:ground resource:Rosario,_Santa_Fe . ?b property:youthclubs ?l . }
138
There are [138] players who played for the youth club which owns the Rosario, Santa Fe stadium.
There are [138] players who have played for the youth club owning Rosario, the Santa Fe stadium.
There are [138] owls whose youthclubs's ground is Rosario, the organisation.
There are [138] owls whose youth club is Rosario, an organization.