How many {film crew member} are to/by {Ub Iwerks} ?
Ub Iwerks has how many crew members?
How many crew members for the film Ub Iwerks} ?
SELECT ( COUNT ( ?v ) AS ?f ) { ?v property:film_crew_member resource:Ub_Iwerks }
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/P3092> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> http://wikidata.dbpedia.org/resource/Q336424 .
} 

SELECT (COUNT(?sub) AS ?value ) { ?sub wdt:P3092 wd:Q336424 }
31