How many bronze medals for the United Kingdom when the silver was less than 0?
CREATE TABLE table_name_18 (bronze INTEGER, nation VARCHAR, silver VARCHAR)
SELECT AVG(bronze) FROM table_name_18 WHERE nation = "united kingdom" AND silver < 0
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_18 (bronze INTEGER, nation VARCHAR, silver VARCHAR) Question: How many bronze medals for the United Kingdom when the silver was less than 0? [/INST] SELECT AVG(bronze) FROM table_name_18 WHERE nation = "united kingdom" AND silver < 0 </s>