What is the number of bronze for Canada and silver is less than 0?
CREATE TABLE table_name_72 (bronze INTEGER, nation VARCHAR, silver VARCHAR)
SELECT SUM(bronze) FROM table_name_72 WHERE nation = "canada" AND silver < 0
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_72 (bronze INTEGER, nation VARCHAR, silver VARCHAR) Question: What is the number of bronze for Canada and silver is less than 0? [/INST] SELECT SUM(bronze) FROM table_name_72 WHERE nation = "canada" AND silver < 0 </s>