How many {muscle insertion} are for {humerus} ?
Which muscles involve the humerus?
How many muscles work with the humerus?
SELECT ( COUNT ( ?g ) AS ?c ) { resource:humerus property:muscle_insertion ?g }
SELECT (COUNT(?obj) AS ?objs ) {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q162595> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P3491> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
} 

SELECT (COUNT(?obj) AS ?value ) { wd:Q162595 wdt:P3491 ?obj }
9