What was the player's result at the U.S. Open of the player who finished 6th at the Open Ch?
CREATE TABLE table_1172 (
    "Nationality" text,
    "Player" text,
    "Year" real,
    "Wins" real,
    "Masters" text,
    "U.S. Open" text,
    "Open Ch." text,
    "PGA Ch." text
)
SELECT "U.S. Open" FROM table_1172 WHERE "Open Ch." = '6th'
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 player's result at the U.S. Open of the player who finished 6th at the Open Ch? ### Input: CREATE TABLE table_1172 (
    "Nationality" text,
    "Player" text,
    "Year" real,
    "Wins" real,
    "Masters" text,
    "U.S. Open" text,
    "Open Ch." text,
    "PGA Ch." text
) ### Response: SELECT "U.S. Open" FROM table_1172 WHERE "Open Ch." = '6th'