Who won the men's doubles before 1979 when carol silman prina ben shushan won the women's doubles?
CREATE TABLE table_38124 (
    "Year" real,
    "Men's singles" text,
    "Women's singles" text,
    "Men's doubles" text,
    "Women's doubles" text,
    "Mixed doubles" text
)
SELECT "Men's doubles" FROM table_38124 WHERE "Year" < '1979' AND "Women's doubles" = 'carol silman prina ben shushan'
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: Who won the men's doubles before 1979 when carol silman prina ben shushan won the women's doubles? ### Input: CREATE TABLE table_38124 (
    "Year" real,
    "Men's singles" text,
    "Women's singles" text,
    "Men's doubles" text,
    "Women's doubles" text,
    "Mixed doubles" text
) ### Response: SELECT "Men's doubles" FROM table_38124 WHERE "Year" < '1979' AND "Women's doubles" = 'carol silman prina ben shushan'