Were M1 and M2 edited by and executive produced by a cinematographer
SELECT count(*) WHERE {
?x0 a ns:film.cinematographer .
M1 ns:film.film.edited_by ?x0 .
M1 ns:film.film.executive_produced_by ?x0 .
M2 ns:film.film.edited_by ?x0 .
M2 ns:film.film.executive_produced_by ?x0
}