user: Question: Which Nationality has a College/Junior/Club Team (League) of Swift Current Broncos (WCHL)?
Columns: ['Round', 'Player', 'Position', 'Nationality', 'College/Junior/Club Team (League)']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'Steve Vickers', 'LW', 'Canada', 'Toronto Marlboros ( OHA )']
SQL:

assistant: SELECT "Nationality" FROM "Table" WHERE "College/Junior/Club Team (League)" = 'Swift Current Broncos (WCHL)';