What is the earliest year in which the result is championship US Open (2)?
CREATE TABLE table_30989 (
    "Outcome" text,
    "Year" real,
    "Championship" text,
    "Surface" text,
    "Partner" text,
    "Opponents" text,
    "Score" text
)
SELECT MIN("Year") FROM table_30989 WHERE "Championship" = 'US Open (2)'
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 the earliest year in which the result is championship US Open (2)? ### Input: CREATE TABLE table_30989 (
    "Outcome" text,
    "Year" real,
    "Championship" text,
    "Surface" text,
    "Partner" text,
    "Opponents" text,
    "Score" text
) ### Response: SELECT MIN("Year") FROM table_30989 WHERE "Championship" = 'US Open (2)'