Were M2 and M4 directed by M1 's editor , executive produced by M3 , and edited by a film editor
SELECT count(*) WHERE {
?x0 a ns:film.editor .
?x1 ns:film.editor.film M1 .
M2 ns:film.film.directed_by ?x1 .
M2 ns:film.film.edited_by ?x0 .
M2 ns:film.film.executive_produced_by M3 .
M4 ns:film.film.directed_by ?x1 .
M4 ns:film.film.edited_by ?x0 .
M4 ns:film.film.executive_produced_by M3
}