question: Did M0 's Mexican executive producer marry M2
query: SELECT count(*) WHERE {
  ?x0 ns:film.producer.films_executive_produced M0 .
  ?x0 ns:people.person.nationality ns:m.0b90_r .
  ?x0 ns:people.person.spouse_s/ns:people.marriage.spouse|ns:fictional_universe.fictional_character.married_to/ns:fictional_universe.marriage_of_fictional_characters.spouses M2 .
  FILTER ( ?x0 != M2 )
  }