Which best 5-year period has a best 15-year period of alekhine; lasker?
CREATE TABLE table_name_37 (
    best_5_year_period VARCHAR,
    best_15_year_period VARCHAR
)
SELECT best_5_year_period FROM table_name_37 WHERE best_15_year_period = "alekhine; lasker"
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: Which best 5-year period has a best 15-year period of alekhine; lasker? ### Input: CREATE TABLE table_name_37 (
    best_5_year_period VARCHAR,
    best_15_year_period VARCHAR
) ### Response: SELECT best_5_year_period FROM table_name_37 WHERE best_15_year_period = "alekhine; lasker"