What circuit was used on August 21?
CREATE TABLE table_25459168_2 (circuit VARCHAR, date VARCHAR)
SELECT circuit FROM table_25459168_2 WHERE date = "August 21"
### Context: CREATE TABLE table_25459168_2 (circuit VARCHAR, date VARCHAR) ### Question: What circuit was used on August 21? ### Answer: SELECT circuit FROM table_25459168_2 WHERE date = "August 21"