col : rank | nation | gold | silver | bronze | total row 1 : 1 | brazil | 13 | 18 | 12 | 43 row 2 : 2 | argentina | 7 | 4 | 7 | 18 row 3 : 3 | chile | 7 | 2 | 3 | 12 row 4 : 4 | colombia | 5 | 5 | 4 | 14 row 5 : 5 | venezuela | 4 | 6 | 6 | 16 row 6 : 6 | uruguay | 1 | 1 | 0 | 2 row 7 : 7 | peru | 0 | 1 | 0 | 1 row 8 : 8 | panama | 0 | 0 | 2 | 2 row 9 : 8 | bolivia | 0 | 0 | 2 | 2 row 10 : 10 | paraguay | 0 | 0 | 1 | 1
which nations competed in the 1979 south american championships? which of these earned at least one silver medal?
brazil, argentina, chile, colombia, venezuela, uruguay, peru
Rank Nation Gold Silver Bronze Total
which of these earned at least one silver medal?
1 Brazil 13 18 12 43
2 Argentina 7 4 7 18
3 Chile 7 2 3 12
4 Colombia 5 5 4 14
5 Venezuela 4 6 6 16
6 Uruguay 1 1 0 2
7 Peru 0 1 0 1
8 Panama 0 0 2 2
8 Bolivia 0 0 2 2
10 Paraguay 0 0 1 1
Brazil Argentina Chile Colombia Venezuela Uruguay Peru
which of these earned at least one silver medal? || which nations competed in the 1979 south american championships?