Were M1 , M2 , M3 , and M4 directed and executive produced by a film 's sequel 's star
SELECT count(*) WHERE {
?x0 ns:film.actor.film/ns:film.performance.film ?x1 .
?x1 ns:film.film.prequel ?x2 .
?x2 a ns:film.film .
M1 ns:film.film.directed_by ?x0 .
M1 ns:film.film.executive_produced_by ?x0 .
M2 ns:film.film.directed_by ?x0 .
M2 ns:film.film.executive_produced_by ?x0 .
M3 ns:film.film.directed_by ?x0 .
M3 ns:film.film.executive_produced_by ?x0 .
M4 ns:film.film.directed_by ?x0 .
M4 ns:film.film.executive_produced_by ?x0
}