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