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_name_31 (overs VARCHAR, ground VARCHAR, opponent VARCHAR)
### Question:
How many overs occurred at Waca Ground against Queensland?
### Answer:
SELECT overs FROM table_name_31 WHERE ground = "waca ground" AND opponent = "queensland"