How many {cast member} are for {Bicycle Thieves} ?
In Bicycle Thieves, how many cast members are there?
How many cast members are in Bicycle Theives?
SELECT ( COUNT ( ?v ) AS ?u ) { resource:Bicycle_Thieves property:cast_member ?v }
SELECT (COUNT(?obj) AS ?objs ) {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q172837> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P161> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
} 

SELECT (COUNT(?obj) AS ?value ) { wd:Q172837 wdt:P161 ?obj }
13