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