What film producer employed M1 and was founded by a star of M2
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:film.producer .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person M1 .
?x0 ns:organization.organization.founders ?x1 .
?x1 ns:film.actor.film/ns:film.performance.film M2
}