Were M1 and M4 edited by M3 , edited by a film 's producer , and executive produced by M2
SELECT count(*) WHERE {
?x0 ns:film.producer.film|ns:film.production_company.films ?x1 .
?x1 a ns:film.film .
M1 ns:film.film.edited_by ?x0 .
M1 ns:film.film.edited_by M3 .
M1 ns:film.film.executive_produced_by M2 .
M4 ns:film.film.edited_by ?x0 .
M4 ns:film.film.edited_by M3 .
M4 ns:film.film.executive_produced_by M2
}