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_2602958_4 (_number VARCHAR, prod_code VARCHAR)
### Question:
Which episodein season 3 had 175020 for a production code?
### Answer:
SELECT _number FROM table_2602958_4 WHERE prod_code = 175020