What was the surface for events held in 1983?
CREATE TABLE table_73317 (
    "Outcome" text,
    "Year" real,
    "Championship" text,
    "Surface" text,
    "Partner" text,
    "Opponents" text,
    "Score" text
)
SELECT "Surface" FROM table_73317 WHERE "Year" = '1983'
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 was the surface for events held in 1983? ### Input: CREATE TABLE table_73317 (
    "Outcome" text,
    "Year" real,
    "Championship" text,
    "Surface" text,
    "Partner" text,
    "Opponents" text,
    "Score" text
) ### Response: SELECT "Surface" FROM table_73317 WHERE "Year" = '1983'