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_57 (engine VARCHAR, points VARCHAR, year VARCHAR, entrant VARCHAR)
### Question:
What is the engine for the bmw motorsport entrant with 123 points before 2004?
### Answer:
SELECT engine FROM table_name_57 WHERE year < 2004 AND entrant = "bmw motorsport" AND points = 123