Which film producer that M1 founded and M3 was employed by did M2 found
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:film.producer .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person M3 .
?x0 ns:organization.organization.founders M1 .
?x0 ns:organization.organization.founders M2
}