How many {statistical leader} are to/by {Wilt Chamberlain} ?
What are Wilt Chamberlain's victorious figures?
What are Wilt Chamberlain's winning statistics?
SELECT ( COUNT ( ?m ) AS ?x ) { ?m property:statistical_leader resource:Wilt_Chamberlain }
SELECT (COUNT(?sub) AS ?subs ) {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> ?sub .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P3279> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> http://wikidata.dbpedia.org/resource/Q182455 .
} 

SELECT (COUNT(?sub) AS ?value ) { ?sub wdt:P3279 wd:Q182455 }
8