Did M3 , M4 , and M5 star a film director whose sibling founded M2 and was employed by M1
SELECT count(*) WHERE {
?x0 a ns:film.director .
?x0 ns:people.person.sibling_s/ns:people.sibling_relationship.sibling|ns:fictional_universe.fictional_character.siblings/ns:fictional_universe.sibling_relationship_of_fictional_characters.siblings ?x1 .
?x1 ns:organization.organization_founder.organizations_founded M2 .
?x1 ns:people.person.employment_history/ns:business.employment_tenure.company M1 .
FILTER ( ?x0 != ?x1 ) .
M3 ns:film.film.starring/ns:film.performance.actor ?x0 .
M4 ns:film.film.starring/ns:film.performance.actor ?x0 .
M5 ns:film.film.starring/ns:film.performance.actor ?x0
}