what are all the nations?
canada, united states, austria, japan, italy, france, australia, norway, slovenia, finland, germany, russia, switzerland, china, poland, czech republic, belgium, netherlands, spain, bulgaria, great britain, sweden
how many silver medals did they win?
6, 7, 9, 2, 7, 4, 4, 2, 1, 1, 1, 0, 5, 1, 1, 0, 0, 1, 0, 0, 0, 0
which nation won the most silver medals?
austria