What was the mens open when the mens u20 was Qld Country Rustlers def Southern Suns?
CREATE TABLE table_16724844_1 (
    mens_open VARCHAR,
    mens_u20 VARCHAR
)
SELECT mens_open FROM table_16724844_1 WHERE mens_u20 = "Qld Country Rustlers def Southern Suns"
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: What was the mens open when the mens u20 was Qld Country Rustlers def Southern Suns? ### Input: CREATE TABLE table_16724844_1 (
    mens_open VARCHAR,
    mens_u20 VARCHAR
) ### Response: SELECT mens_open FROM table_16724844_1 WHERE mens_u20 = "Qld Country Rustlers def Southern Suns"