question: Were M3 and M4 influenced by a star of M2 and influenced by M0 's Swedish sibling
query: SELECT count(*) WHERE {
  ?x0 ns:people.person.nationality ns:m.0d0vqn .
  ?x0 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 M0 .
  ?x1 ns:film.actor.film/ns:film.performance.film M2 .
  FILTER ( ?x0 != M0 ) .
  M3 ns:influence.influence_node.influenced_by ?x0 .
  M3 ns:influence.influence_node.influenced_by ?x1 .
  M4 ns:influence.influence_node.influenced_by ?x0 .
  M4 ns:influence.influence_node.influenced_by ?x1
  }