question: Did M4 , M6 , and M7 direct M5 and direct a film that M1 , M2 , and M3 directed
query: SELECT count(*) WHERE {
  ?x0 a ns:film.film .
  ?x0 ns:film.film.directed_by M1 .
  ?x0 ns:film.film.directed_by M2 .
  ?x0 ns:film.film.directed_by M3 .
  M4 ns:film.director.film ?x0 .
  M4 ns:film.director.film M5 .
  M6 ns:film.director.film ?x0 .
  M6 ns:film.director.film M5 .
  M7 ns:film.director.film ?x0 .
  M7 ns:film.director.film M5
  }