What is Opponent in Final, when Surface is 'Hard', and when Date is '13 January 1992'?
CREATE TABLE table_name_31 (
    opponent_in_final VARCHAR,
    surface VARCHAR,
    date VARCHAR
)
SELECT opponent_in_final FROM table_name_31 WHERE surface = "hard" AND date = "13 january 1992"
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 is Opponent in Final, when Surface is 'Hard', and when Date is '13 January 1992'? ### Input: CREATE TABLE table_name_31 (
    opponent_in_final VARCHAR,
    surface VARCHAR,
    date VARCHAR
) ### Response: SELECT opponent_in_final FROM table_name_31 WHERE surface = "hard" AND date = "13 january 1992"