Table schema:
CREATE TABLE table_name_12 (nationality VARCHAR, round VARCHAR, nhl_team VARCHAR, college_junior_club_team__league_ VARCHAR)

Question: What's the Nationality of Round 8 Vancouver Canucks NHL Team of Swift Current Broncos (WHL)?
SQL: SELECT nationality FROM table_name_12 WHERE nhl_team = "vancouver canucks" AND college_junior_club_team__league_ = "swift current broncos (whl)" AND round = 8