What editor of M1 and M2 was employed by M3 's employer and employed by M0
SELECT DISTINCT ?x0 WHERE {
?x0 ns:film.editor.film M1 .
?x0 ns:film.editor.film M2 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x1 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M0 .
?x1 ns:business.employer.employees/ns:business.employment_tenure.person M3
}