Were M2 and M3 executive produced by a art director that directed , edited , and wrote M1
SELECT count(*) WHERE {
?x0 a ns:film.film_art_director .
?x0 ns:film.director.film M1 .
?x0 ns:film.editor.film M1 .
?x0 ns:film.writer.film M1 .
M2 ns:film.film.executive_produced_by ?x0 .
M3 ns:film.film.executive_produced_by ?x0
}