question: Did a Mexican cinematographer that M1 and M2 were edited by and produced by produce M4 , M5 , and M6
query: SELECT count(*) WHERE {
  ?x0 a ns:film.cinematographer .
  ?x0 ns:film.editor.film M1 .
  ?x0 ns:film.editor.film M2 .
  ?x0 ns:film.producer.film|ns:film.production_company.films M1 .
  ?x0 ns:film.producer.film|ns:film.production_company.films M2 .
  ?x0 ns:film.producer.film|ns:film.production_company.films M4 .
  ?x0 ns:film.producer.film|ns:film.production_company.films M5 .
  ?x0 ns:film.producer.film|ns:film.production_company.films M6 .
  ?x0 ns:people.person.nationality ns:m.0b90_r
  }