question: Was a Japanese actor that executive produced M1 , M2 , and M3 employed by M4
query: SELECT count(*) WHERE {
  ?x0 a ns:film.actor .
  ?x0 ns:film.producer.films_executive_produced M1 .
  ?x0 ns:film.producer.films_executive_produced M2 .
  ?x0 ns:film.producer.films_executive_produced M3 .
  ?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M4 .
  ?x0 ns:people.person.nationality ns:m.03_3d
  }