question: What was directed by M2 's sibling and directed by M1 's Mexican director 's sibling
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 ns:film.film.directed_by ?x1 .
  ?x0 ns:film.film.directed_by ?x2 .
  ?x1 ns:people.person.sibling_s/ns:people.sibling_relationship.sibling|ns:fictional_universe.fictional_character.siblings/ns:fictional_universe.sibling_relationship_of_fictional_characters.siblings ?x3 .
  ?x2 ns:people.person.sibling_s/ns:people.sibling_relationship.sibling|ns:fictional_universe.fictional_character.siblings/ns:fictional_universe.sibling_relationship_of_fictional_characters.siblings M2 .
  ?x3 ns:film.director.film M1 .
  ?x3 ns:people.person.nationality ns:m.0b90_r .
  FILTER ( ?x1 != ?x3 ) .
  FILTER ( ?x2 != M2 )
  }