Was M2 executive produced by M3 and M4 , edited by a art director , and written by a person
SELECT count(*) WHERE {
?x0 a ns:people.person .
?x1 a ns:film.film_art_director .
M2 ns:film.film.edited_by ?x1 .
M2 ns:film.film.executive_produced_by M3 .
M2 ns:film.film.executive_produced_by M4 .
M2 ns:film.film.written_by ?x0
}