Table schema:
CREATE TABLE table_name_70 (bronze INTEGER, silver VARCHAR, total VARCHAR, rank VARCHAR, gold VARCHAR)

Question: How many Bronze medals were received by the nation that Ranked less than 5 and received more than 2 Gold medals, less than 4 Silver medals with a Total of 9 medals?
SQL: SELECT AVG(bronze) FROM table_name_70 WHERE rank < 5 AND gold > 2 AND total = 9 AND silver < 4