question: Was M0 a British actor that executive produced M2 , M3 , M4 , and M5
query: SELECT count(*) WHERE {
  M0 a ns:film.actor .
  M0 ns:film.producer.films_executive_produced M2 .
  M0 ns:film.producer.films_executive_produced M3 .
  M0 ns:film.producer.films_executive_produced M4 .
  M0 ns:film.producer.films_executive_produced M5 .
  M0 ns:people.person.nationality ns:m.07ssc
  }