question: What was a male German Canadian screenwriter 's country of nationality
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 ^ns:people.person.nationality ?x1 .
  ?x1 a ns:film.writer .
  ?x1 ns:people.person.gender ns:m.05zppz .
  ?x1 ns:people.person.nationality ns:m.0345h .
  ?x1 ns:people.person.nationality ns:m.0d060g
  }