question: What Italian child of M2 was a Canadian director of M3 and M4
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 ns:film.director.film M3 .
  ?x0 ns:film.director.film M4 .
  ?x0 ns:people.person.nationality ns:m.03rjj .
  ?x0 ns:people.person.nationality ns:m.0d060g .
  ?x0 ns:people.person.parents|ns:fictional_universe.fictional_character.parents|ns:organization.organization.parent/ns:organization.organization_relationship.parent M2
  }