Was a film written by M1 , edited by M3 , written by M2 , and edited by M4 's cinematographer
SELECT count(*) WHERE {
?x0 a ns:film.film .
?x0 ns:film.film.edited_by ?x1 .
?x0 ns:film.film.edited_by M3 .
?x0 ns:film.film.written_by M1 .
?x0 ns:film.film.written_by M2 .
?x1 ns:film.cinematographer.film M4
}