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