Were M2 and M3 edited by a writer and cinematographer of M0 and edited by a cinematographer
SELECT count(*) WHERE {
?x0 ns:film.cinematographer.film M0 .
?x0 ns:film.writer.film M0 .
?x1 a ns:film.cinematographer .
M2 ns:film.film.edited_by ?x0 .
M2 ns:film.film.edited_by ?x1 .
M3 ns:film.film.edited_by ?x0 .
M3 ns:film.film.edited_by ?x1
}