question: Which child and parent of a production company did M0 found
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 ns:organization.organization.founders M0 .
  ?x0 ns:people.person.children|ns:fictional_universe.fictional_character.children|ns:organization.organization.child/ns:organization.organization_relationship.child ?x1 .
  ?x0 ns:people.person.parents|ns:fictional_universe.fictional_character.parents|ns:organization.organization.parent/ns:organization.organization_relationship.parent ?x1 .
  ?x1 a ns:film.production_company
  }