which nations competed during the 2003 world aquatics championships?
united states, russia, australia, china, germany, japan, netherlands, great britain, ukraine, italy, canada, hungary, spain, poland, france, finland, belarus, czech republic, slovakia, denmark, croatia, romania, bulgaria, mexico, serbia and montenegro, south africa, sweden, tunisia
how many total medals did they win?
31, 21, 26, 19, 16, 9, 7, 8, 7, 5, 3, 6, 6, 2, 3, 2, 1, 2, 2, 1, 1, 2, 1, 1, 1, 1, 1, 1
what about silver medals?
13, 5, 12, 4, 6, 3, 2, 3, 3, 2, 0, 4, 2, 1, 0, 0, 0, 2, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0
which teams won more than 20 total medals?
united states, russia, australia
of those, how many silver medals did they win?
13, 5, 12
and which of those nations won the fewest silver medals?
russia