Were M2 , M3 , M4 , M5 , and M6 written by and directed by a film director that edited M1
SELECT count(*) WHERE {
?x0 a ns:film.director .
?x0 ns:film.editor.film M1 .
M2 ns:film.film.directed_by ?x0 .
M2 ns:film.film.written_by ?x0 .
M3 ns:film.film.directed_by ?x0 .
M3 ns:film.film.written_by ?x0 .
M4 ns:film.film.directed_by ?x0 .
M4 ns:film.film.written_by ?x0 .
M5 ns:film.film.directed_by ?x0 .
M5 ns:film.film.written_by ?x0 .
M6 ns:film.film.directed_by ?x0 .
M6 ns:film.film.written_by ?x0
}