CREATE TABLE table_54570 ("Round" FLOAT, "Player" TEXT, "Nationality" TEXT, "NHL Team" TEXT, "College/Junior/Club Team  ( League ) " TEXT)

What's the Nationality of Round 8 Vancouver Canucks NHL Team of Swift Current Broncos (WHL)?
SELECT "Nationality" FROM table_54570 WHERE "NHL Team" = 'vancouver canucks' AND "College/Junior/Club Team (League)" = 'swift current broncos (whl)' AND "Round" = '8'
SELECT "Nationality" FROM "table_54570" WHERE "College/Junior/Club Team (League)" = 'swift current broncos (whl)' AND "NHL Team" = 'vancouver canucks' AND "Round" = '8'