col : rank | nation | gold | silver | bronze | total row 1 : 1 | united states (usa) | 25 | 16 | 7 | 48 row 2 : 2 | canada (can) | 5 | 4 | 7 | 16 row 3 : 3 | jamaica (jam) | 4 | 3 | 4 | 11 row 4 : 4 | cuba (cub) | 3 | 8 | 4 | 15 row 5 : 5 | mexico (mex) | 0 | 3 | 3 | 6 row 6 : 6 | brazil (bra) | 0 | 2 | 1 | 3 row 7 : 7 | puerto rico (pur) | 0 | 1 | 1 | 2 row 8 : 8 | colombia (col) | 0 | 0 | 3 | 3 row 9 : 9 | peru (per) | 0 | 0 | 2 | 2 row 10 : 9 | trinidad and tobago (tri) | 0 | 0 | 2 | 2 row 11 : 11 | chile (chi) | 0 | 0 | 1 | 1 row 12 : 11 | uruguay (uru) | 0 | 0 | 1 | 1 row 13 : 11 | venezuela (ven) | 0 | 0 | 1 | 1
which nations competed? how many gold medals did they win? and which nation won more than 20?
united states (usa)
Rank Nation Gold Silver Bronze Total
and which nation won more than 20?
1 United States (USA) 25 16 7 48
2 Canada (CAN) 5 4 7 16
3 Jamaica (JAM) 4 3 4 11
4 Cuba (CUB) 3 8 4 15
5 Mexico (MEX) 0 3 3 6
6 Brazil (BRA) 0 2 1 3
7 Puerto Rico (PUR) 0 1 1 2
8 Colombia (COL) 0 0 3 3
9 Peru (PER) 0 0 2 2
9 Trinidad and Tobago (TRI) 0 0 2 2
11 Chile (CHI) 0 0 1 1
11 Uruguay (URU) 0 0 1 1
11 Venezuela (VEN) 0 0 1 1
United States (USA)
and which nation won more than 20? || how many gold medals did they win? | which nations competed?