question: What was a country of nationality of a film director whose sibling founded M1
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 ^ns:people.person.nationality ?x1 .
  ?x1 a ns:film.director .
  ?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 ?x2 .
  ?x2 ns:organization.organization_founder.organizations_founded M1 .
  FILTER ( ?x1 != ?x2 )
  }