What are the average Golds, when Nation Yugoslavia, and when Silver is like greater 0?
Rank Nation Gold Silver Bronze Total
1958 World Wrestling Championships
16864127
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2-16864127-1
Medal table
Medal table
1 Soviet Union 5 2 1 8
2 Turkey 2 2 1 5
3 Hungary 1 2 1 4
4 Bulgaria 0 1 0 1
4 West Germany 0 1 0 1
6 East Germany 0 0 2 2
7 Romania 0 0 1 1
7 Sweden 0 0 1 1
7 Yugoslavia 0 0 1 1
Total Total 8 8 8 24
SELECT AVG Gold FROM table WHERE Nation = yugoslavia AND Silver > 0
yugoslavia 0