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