How many mixed doubles were won in 1996?
CREATE TABLE table_19790 (
    "Year" real,
    "Mens singles" text,
    "Womens singles" text,
    "Mens doubles" text,
    "Womens doubles" text,
    "Mixed doubles" text
)
SELECT COUNT("Mixed doubles") FROM table_19790 WHERE "Year" = '1996'
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: How many mixed doubles were won in 1996? ### Input: CREATE TABLE table_19790 (
    "Year" real,
    "Mens singles" text,
    "Womens singles" text,
    "Mens doubles" text,
    "Womens doubles" text,
    "Mixed doubles" text
) ### Response: SELECT COUNT("Mixed doubles") FROM table_19790 WHERE "Year" = '1996'