question: Did a German female person play M2 and play M3
query: SELECT count(*) WHERE {
  ?x0 a ns:people.person .
  ?x0 ns:film.actor.film/ns:film.performance.character M2 .
  ?x0 ns:film.actor.film/ns:film.performance.character M3 .
  ?x0 ns:people.person.gender ns:m.02zsn .
  ?x0 ns:people.person.nationality ns:m.0345h
  }