question: Which German person was a child of M3 's male cinematographer
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:people.person .
  ?x0 ns:people.person.nationality ns:m.0345h .
  ?x0 ns:people.person.parents|ns:fictional_universe.fictional_character.parents|ns:organization.organization.parent/ns:organization.organization_relationship.parent ?x1 .
  ?x1 ns:film.cinematographer.film M3 .
  ?x1 ns:people.person.gender ns:m.05zppz
  }