Which film producer employed M1 , was founded by a producer and writer of M2 , and employed M3 's employee
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:film.producer .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person ?x1 .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person M1 .
?x0 ns:organization.organization.founders ?x2 .
?x1 ns:people.person.employment_history/ns:business.employment_tenure.company M3 .
?x2 ns:film.producer.film|ns:film.production_company.films M2 .
?x2 ns:film.writer.film M2
}