col : rank | nation | gold | silver | bronze | total row 1 : 1 | australia (aus) | 2 | 1 | 0 | 3 row 2 : 2 | italy (ita) | 1 | 1 | 1 | 3 row 3 : 3 | germany (eua) | 1 | 0 | 1 | 2 row 4 : 4 | soviet union (urs) | 1 | 0 | 0 | 1 row 5 : 5 | switzerland (sui) | 0 | 2 | 1 | 3 row 6 : 6 | united states (usa) | 0 | 1 | 0 | 1 row 7 : 7 | great britain (gbr) | 0 | 0 | 1 | 1 row 8 : 7 | france (fra) | 0 | 0 | 1 | 1
which countries ranked in the top 7 for equestrian events at the 1960 summer olympics? which countries won at least one silver medal? which of those didn't win any gold medals?
switzerland (sui), united states (usa)
Rank Nation Gold Silver Bronze Total
which of those didn't win any gold medals?
1 Australia (AUS) 2 1 0 3
2 Italy (ITA) 1 1 1 3
3 Germany (EUA) 1 0 1 2
4 Soviet Union (URS) 1 0 0 1
5 Switzerland (SUI) 0 2 1 3
6 United States (USA) 0 1 0 1
7 Great Britain (GBR) 0 0 1 1
7 France (FRA) 0 0 1 1
Switzerland (SUI) United States (USA)
which of those didn't win any gold medals? || which countries won at least one silver medal? | which countries ranked in the top 7 for equestrian events at the 1960 summer olympics?