Was M1 M0 's prequel 's prequel 's American star
SELECT count(*) WHERE {
?x0 ns:film.film.sequel ?x1 .
?x1 ns:film.film.sequel M0 .
M1 ns:film.actor.film/ns:film.performance.film ?x0 .
M1 ns:people.person.nationality ns:m.09c7w0
}