Were M1 and M2 directed and edited by a cinematographer and director of a film
SELECT count(*) WHERE {
?x0 ns:film.cinematographer.film ?x1 .
?x0 ns:film.director.film ?x1 .
?x1 a ns:film.film .
M1 ns:film.film.directed_by ?x0 .
M1 ns:film.film.edited_by ?x0 .
M2 ns:film.film.directed_by ?x0 .
M2 ns:film.film.edited_by ?x0
}