Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_69 (bronze INTEGER, silver VARCHAR, gold VARCHAR)
### Question:
Which Bronze has a Silver of 15, and a Gold smaller than 20?
### Answer:
SELECT SUM(bronze) FROM table_name_69 WHERE silver = 15 AND gold < 20