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_17972136_1 (week INTEGER, game_site VARCHAR)
### Question:
Where is riverfront stadium the game site for the week?
### Answer:
SELECT MIN(week) FROM table_17972136_1 WHERE game_site = "Riverfront Stadium"