On how many different dates was the race at the Silverstone circuit?
CREATE TABLE table_22334183_3 (date VARCHAR, circuit VARCHAR)
SELECT COUNT(date) FROM table_22334183_3 WHERE circuit = "Silverstone"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_22334183_3 (date VARCHAR, circuit VARCHAR) Question: On how many different dates was the race at the Silverstone circuit? [/INST] SELECT COUNT(date) FROM table_22334183_3 WHERE circuit = "Silverstone" </s>