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_86 (bronze INTEGER, gold VARCHAR, silver VARCHAR)
### Question:
What is the average bronze medal when gold is greater than 0, and there is less than 0 silver medals?
### Answer:
SELECT AVG(bronze) FROM table_name_86 WHERE gold > 0 AND silver < 0