question: Did a film that was directed by M2 , M3 , and M4 star M1
query: SELECT count(*) WHERE {
  ?x0 a ns:film.film .
  ?x0 ns:film.film.directed_by M2 .
  ?x0 ns:film.film.directed_by M3 .
  ?x0 ns:film.film.directed_by M4 .
  ?x0 ns:film.film.starring/ns:film.performance.actor M1
  }