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_20 (year INTEGER, actress VARCHAR)
### Question:
When was the last year when Katharine Hepburn won?
### Answer:
SELECT MAX(year) FROM table_name_20 WHERE actress = "katharine hepburn"