Was M1 edited by M2 , M3 , and M4 and written by M0 's prequel 's editor
SELECT count(*) WHERE {
?x0 ns:film.editor.film ?x1 .
?x1 ns:film.film.sequel M0 .
M1 ns:film.film.edited_by M2 .
M1 ns:film.film.edited_by M3 .
M1 ns:film.film.edited_by M4 .
M1 ns:film.film.written_by ?x0
}