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