Table schema:
CREATE TABLE table_name_77 (total INTEGER, bronze VARCHAR, rank VARCHAR, gold VARCHAR, silver VARCHAR)

Question: Smaller than 4, and a Silver larger than 0, and a Rank of 3, and a Bronze smaller than 6 then what is the sum of the gold?
SQL: SELECT SUM(total) FROM table_name_77 WHERE gold < 4 AND silver > 0 AND rank = "3" AND bronze < 6