question: Was M0 M1 's sibling 's German actor 's country of nationality
query: SELECT count(*) WHERE {
  ?x0 ns:film.actor.film/ns:film.performance.character ?x1 .
  ?x0 ns:people.person.nationality ns:m.0345h .
  ?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 M1 .
  FILTER ( ?x1 != M1 ) .
  M0 ^ns:people.person.nationality ?x0
  }