Was M1 edited by M2 and edited by a film producer 's employee
SELECT count(*) WHERE {
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x1 .
?x1 a ns:film.producer .
M1 ns:film.film.edited_by ?x0 .
M1 ns:film.film.edited_by M2
}