question: Who was a film distributor 's Mexican employee
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:people.person .
  ?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x1 .
  ?x0 ns:people.person.nationality ns:m.0b90_r .
  ?x1 a ns:film.film_distributor
  }