question: What was founded by M0 , founded by M1 , founded by M2 , and founded by M3 's American sibling
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 ns:organization.organization.founders ?x1 .
  ?x0 ns:organization.organization.founders M0 .
  ?x0 ns:organization.organization.founders M1 .
  ?x0 ns:organization.organization.founders M2 .
  ?x1 ns:people.person.nationality ns:m.09c7w0 .
  ?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 M3 .
  FILTER ( ?x1 != M3 )
  }