question: Was M0 a Mexican film producer that produced M3 , M4 , and M5 and produced M6 , M7 , and M8
query: SELECT count(*) WHERE {
  M0 a ns:film.producer .
  M0 ns:film.producer.film|ns:film.production_company.films M3 .
  M0 ns:film.producer.film|ns:film.production_company.films M4 .
  M0 ns:film.producer.film|ns:film.production_company.films M5 .
  M0 ns:film.producer.film|ns:film.production_company.films M6 .
  M0 ns:film.producer.film|ns:film.production_company.films M7 .
  M0 ns:film.producer.film|ns:film.production_company.films M8 .
  M0 ns:people.person.nationality ns:m.0b90_r
  }