question: Who was a Mexican British star of M3 and M4
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:people.person .
  ?x0 ns:film.actor.film/ns:film.performance.film M3 .
  ?x0 ns:film.actor.film/ns:film.performance.film M4 .
  ?x0 ns:people.person.nationality ns:m.07ssc .
  ?x0 ns:people.person.nationality ns:m.0b90_r
  }