Daily Empress Indy Silverstone took place on which round?
CREATE TABLE table_22673956_1 (
    rnd INTEGER,
    race_name VARCHAR
)
SELECT MAX(rnd) FROM table_22673956_1 WHERE race_name = "Daily Empress Indy Silverstone"
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: Daily Empress Indy Silverstone took place on which round? ### Input: CREATE TABLE table_22673956_1 (
    rnd INTEGER,
    race_name VARCHAR
) ### Response: SELECT MAX(rnd) FROM table_22673956_1 WHERE race_name = "Daily Empress Indy Silverstone"