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_9 (date VARCHAR, venue VARCHAR, goal VARCHAR)
### Question:
When was the venue mexico city, mexico with a goal of 8?
### Answer:
SELECT date FROM table_name_9 WHERE venue = "mexico city, mexico" AND goal = 8