question: Was a cinematographer a American Mexican producer of M3 and M4
query: SELECT count(*) WHERE {
  ?x0 a ns:film.cinematographer .
  ?x0 ns:film.producer.film|ns:film.production_company.films M3 .
  ?x0 ns:film.producer.film|ns:film.production_company.films M4 .
  ?x0 ns:people.person.nationality ns:m.09c7w0 .
  ?x0 ns:people.person.nationality ns:m.0b90_r
  }