What year was Hazel Grove the constituent for the liberal party?
CREATE TABLE table_name_15 (
    year VARCHAR,
    party VARCHAR,
    constituency VARCHAR
)
SELECT year FROM table_name_15 WHERE party = "liberal" AND constituency = "hazel grove"
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: What year was Hazel Grove the constituent for the liberal party? ### Input: CREATE TABLE table_name_15 (
    year VARCHAR,
    party VARCHAR,
    constituency VARCHAR
) ### Response: SELECT year FROM table_name_15 WHERE party = "liberal" AND constituency = "hazel grove"