Was a film producer that employed M0 's star , was founded by M3 , and was founded by M4 M1
SELECT count(*) WHERE {
?x0 ns:film.actor.film/ns:film.performance.film M0 .
M1 a ns:film.producer .
M1 ns:business.employer.employees/ns:business.employment_tenure.person ?x0 .
M1 ns:organization.organization.founders M3 .
M1 ns:organization.organization.founders M4
}