Was M1 written by M2 , edited by a film director , and edited by M3 , M4 , M5 , and M6
SELECT count(*) WHERE {
?x0 a ns:film.director .
M1 ns:film.film.edited_by ?x0 .
M1 ns:film.film.edited_by M3 .
M1 ns:film.film.edited_by M4 .
M1 ns:film.film.edited_by M5 .
M1 ns:film.film.edited_by M6 .
M1 ns:film.film.written_by M2
}