What producer and editor of M4 did M0 and M1 employ and M2 and M3 employ
SELECT DISTINCT ?x0 WHERE {
?x0 ns:film.editor.film M4 .
?x0 ns:film.producer.film|ns:film.production_company.films M4 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M0 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M1 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M2 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M3
}