Was M0 's prequel edited by M1 and M2 , edited by M3 , and directed by M4 , M5 , and M6
SELECT count(*) WHERE {
?x0 ns:film.film.directed_by M4 .
?x0 ns:film.film.directed_by M5 .
?x0 ns:film.film.directed_by M6 .
?x0 ns:film.film.edited_by M1 .
?x0 ns:film.film.edited_by M2 .
?x0 ns:film.film.edited_by M3 .
?x0 ns:film.film.sequel M0
}