question: Did M3 influence M2 's sibling and influence a German film director
query: SELECT count(*) WHERE {
  ?x0 a ns:film.director .
  ?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 M2 .
  FILTER ( ?x1 != M2 ) .
  M3 ns:influence.influence_node.influenced ?x0 .
  M3 ns:influence.influence_node.influenced ?x1
  }