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_21501565_1 (week__number VARCHAR, original_artist VARCHAR)
### Question:
With original artist of Tina Turner, what is the week number?
### Answer:
SELECT week__number FROM table_21501565_1 WHERE original_artist = "Tina Turner"