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_8 (year INTEGER, category VARCHAR)
### Question:
What year was there a category of Best Supporting Actress?
### Answer:
SELECT SUM(year) FROM table_name_8 WHERE category = "best supporting actress"