Was M0 's director M1 's prequel 's editor , star , and producer
SELECT count(*) WHERE {
?x0 ns:film.actor.film/ns:film.performance.film ?x1 .
?x0 ns:film.director.film M0 .
?x0 ns:film.editor.film ?x1 .
?x0 ns:film.producer.film|ns:film.production_company.films ?x1 .
?x1 ns:film.film.sequel M1
}