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_37 (loss VARCHAR, opponent VARCHAR, date VARCHAR)
### Question:
Who lost when the mariners played on September 12?
### Answer:
SELECT loss FROM table_name_37 WHERE opponent = "mariners" AND date = "september 12"