Which film producer employed M1 and M2 and was founded by a film 's writer
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:film.producer .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person M1 .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person M2 .
?x0 ns:organization.organization.founders ?x1 .
?x1 ns:film.writer.film ?x2 .
?x2 a ns:film.film
}