question: Was M2 a film 's producer 's Canadian employee 's sibling
query: SELECT count(*) WHERE {
  ?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x1 .
  ?x0 ns:people.person.nationality ns:m.0d060g .
  ?x1 ns:film.producer.film|ns:film.production_company.films ?x2 .
  ?x2 a ns:film.film .
  FILTER ( M2 != ?x0 ) .
  M2 ns:people.person.sibling_s/ns:people.sibling_relationship.sibling|ns:fictional_universe.fictional_character.siblings/ns:fictional_universe.sibling_relationship_of_fictional_characters.siblings ?x0
  }