What was written by a production company that M1 and M2 founded and M3 and M4 founded
SELECT DISTINCT ?x0 WHERE {
?x0 ns:film.film.written_by ?x1 .
?x1 a ns:film.production_company .
?x1 ns:organization.organization.founders M1 .
?x1 ns:organization.organization.founders M2 .
?x1 ns:organization.organization.founders M3 .
?x1 ns:organization.organization.founders M4
}