question: Were M5 and M7 directed by M6 and executive produced by a Japanese director of M1 , M2 , M3 , and M4
query: SELECT count(*) WHERE {
  ?x0 ns:film.director.film M1 .
  ?x0 ns:film.director.film M2 .
  ?x0 ns:film.director.film M3 .
  ?x0 ns:film.director.film M4 .
  ?x0 ns:people.person.nationality ns:m.03_3d .
  M5 ns:film.film.directed_by M6 .
  M5 ns:film.film.executive_produced_by ?x0 .
  M7 ns:film.film.directed_by M6 .
  M7 ns:film.film.executive_produced_by ?x0
  }