Was a prequel of M0 written by and executive produced by M1 's editor , writer , and star
SELECT count(*) WHERE {
?x0 ns:film.film.executive_produced_by ?x1 .
?x0 ns:film.film.sequel M0 .
?x0 ns:film.film.written_by ?x1 .
?x1 ns:film.actor.film/ns:film.performance.film M1 .
?x1 ns:film.editor.film M1 .
?x1 ns:film.writer.film M1
}