Did M2 star M3 and M4 , star a film producer , and star a employee and founder of M1
SELECT count(*) WHERE {
?x0 a ns:film.producer .
?x1 ns:organization.organization_founder.organizations_founded M1 .
?x1 ns:people.person.employment_history/ns:business.employment_tenure.company M1 .
M2 ns:film.film.starring/ns:film.performance.actor ?x0 .
M2 ns:film.film.starring/ns:film.performance.actor ?x1 .
M2 ns:film.film.starring/ns:film.performance.actor M3 .
M2 ns:film.film.starring/ns:film.performance.actor M4
}