question: Did a Mexican cinematographer write M3 , M4 , and M5 , edit M1 and M2 , and write 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.writer.film M3 .
  ?x0 ns:film.writer.film M4 .
  ?x0 ns:film.writer.film M5 .
  ?x0 ns:film.writer.film M6 .
  ?x0 ns:people.person.nationality ns:m.0b90_r
  }