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_26 (opponent VARCHAR, game VARCHAR, location_attendance VARCHAR, date VARCHAR)
### Question:
Who is the opponent of game 54, which was in Los Angeles and was before day 18?
### Answer:
SELECT opponent FROM table_name_26 WHERE location_attendance = "los angeles" AND date < 18 AND game = 54