Table: south_american_athletics_1931
Columns: rank
nation
gold
silver
bronze
total

Question: What's the lowest Gold if the Rank is over 4 but the Total is less than 1?
SQL: SELECT MIN("gold") FROM south_american_athletics_1931 WHERE "rank" > 4 AND "total" < 1

Question: What's the highest bronze with a less than 1 Rank?
SQL: SELECT MAX("bronze") FROM south_american_athletics_1931 WHERE "rank" < 1

Question: What's the average total if the Bronze is 5 and the Silver is less than 4?
SQL: SELECT AVG("total") FROM south_american_athletics_1931 WHERE "bronze" = 5 AND "silver" < 4