How many Silver medal have done Nation Rank less than 1 are receiving?
Rank Nation Gold Silver Bronze Total
1973 World Judo Championships
15807880
real text real real real real
2-15807880-2
Medals table
Medals table
1 Japan 6 4 1 11
2 East Germany 0 1 3 4
2 Soviet Union 0 1 3 4
4 Great Britain 0 0 2 2
5 Germany 0 0 1 1
5 Poland 0 0 1 1
5 Cuba 0 0 1 1
SELECT AVG Silver FROM table WHERE Rank < 1
1