question: Did a Mexican film editor direct M4 , M5 , M6 , and M7 , produce M3 , and executive produce M1
query: SELECT count(*) WHERE {
  ?x0 a ns:film.editor .
  ?x0 ns:film.director.film M4 .
  ?x0 ns:film.director.film M5 .
  ?x0 ns:film.director.film M6 .
  ?x0 ns:film.director.film M7 .
  ?x0 ns:film.producer.films_executive_produced M1 .
  ?x0 ns:film.producer.film|ns:film.production_company.films M3 .
  ?x0 ns:people.person.nationality ns:m.0b90_r
  }