Table:
text: 1931 South American Championships in Athletics
Medal table
Medal table
Rank_ Nation Gold Silver Bronze Total
1 Argentina 16 10 6 32
2 Chile 5 8 10 23
3 Brazil 2 4 5 11
4 Uruguay 0 1 1 2
5 Peru 0 0 1 1

Question: What is the lowest gold for the 1931 South American Track and Field Championships if the rank is over 4 but the total is under 1?

Question: What is the highest bronze ranking less than 1 for the 1931 South American Track and Field Championships?

Question: What is the average total if bronze is 5 and silver is less than 4 for the 1931 South American Athletics Championships?