question: What did a Mexican screenwriter executive produce and M0 write
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 ns:film.film.executive_produced_by ?x1 .
  ?x0 ns:film.film.written_by M0 .
  ?x1 a ns:film.writer .
  ?x1 ns:people.person.nationality ns:m.0b90_r
  }