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 (best_5_year_period VARCHAR, best_15_year_period VARCHAR)
### Question:
Which best 5-year period has a best 15-year period of alekhine; lasker?
### Answer:
SELECT best_5_year_period FROM table_name_37 WHERE best_15_year_period = "alekhine; lasker"