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_86 (opponent VARCHAR, result VARCHAR, week VARCHAR, attendance VARCHAR)
### Question:
What is the Opponent at the game with an Attendance of 64,900 in Week prior to 15 with a Result of L 38-31?
### Answer:
SELECT opponent FROM table_name_86 WHERE week < 15 AND attendance = "64,900" AND result = "l 38-31"