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_51 (bronze INTEGER, nation VARCHAR, silver VARCHAR)
### Question:
Wha is the average number of bronze of hungary, which has less than 1 silver?
### Answer:
SELECT AVG(bronze) FROM table_name_51 WHERE nation = "hungary" AND silver < 1