Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_16724844_1 (mens_open VARCHAR, mens_u20 VARCHAR)
### Question:
What was the mens open when the mens u20 was  Qld Country Rustlers def Southern Suns?
### Answer:
SELECT mens_open FROM table_16724844_1 WHERE mens_u20 = "Qld Country Rustlers def Southern Suns"