What production company employed M4 's editor , employed M3 , and was founded by M1 and M2
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:film.production_company .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person ?x1 .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person M3 .
?x0 ns:organization.organization.founders M1 .
?x0 ns:organization.organization.founders M2 .
?x1 ns:film.editor.film M4
}