question: Was a person 's sibling 's female sibling 's country of nationality M2
query: SELECT count(*) WHERE {
  ?x0 ns:people.person.gender ns:m.02zsn .
  ?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 ?x1 .
  ?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 a ns:people.person .
  FILTER ( ?x0 != ?x1 ) .
  FILTER ( ?x1 != ?x2 ) .
  M2 ^ns:people.person.nationality ?x0
  }