Did a film star M4 's director , star M1 , and star M2 and M3
SELECT count(*) WHERE {
?x0 a ns:film.film .
?x0 ns:film.film.starring/ns:film.performance.actor ?x1 .
?x0 ns:film.film.starring/ns:film.performance.actor M1 .
?x0 ns:film.film.starring/ns:film.performance.actor M2 .
?x0 ns:film.film.starring/ns:film.performance.actor M3 .
?x1 ns:film.director.film M4
}