Were M2 and M3 edited by and produced by a screenwriter that directed , wrote , and edited M1
SELECT count(*) WHERE {
?x0 a ns:film.writer .
?x0 ns:film.director.film M1 .
?x0 ns:film.editor.film M1 .
?x0 ns:film.writer.film M1 .
M2 ns:film.film.edited_by ?x0 .
M2 ns:film.film.produced_by|ns:film.film.production_companies ?x0 .
M3 ns:film.film.edited_by ?x0 .
M3 ns:film.film.produced_by|ns:film.film.production_companies ?x0
}