question: What was M0 's cinematographer 's child 's country of nationality
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 ^ns:people.person.nationality ?x1 .
  ?x1 ns:people.person.parents|ns:fictional_universe.fictional_character.parents|ns:organization.organization.parent/ns:organization.organization_relationship.parent ?x2 .
  ?x2 ns:film.cinematographer.film M0
  }