Competition of u.s championships, and a Event of all around has what average year?
CREATE TABLE table_name_61 (
    year INTEGER,
    competition VARCHAR,
    event VARCHAR
)
SELECT AVG(year) FROM table_name_61 WHERE competition = "u.s championships" AND event = "all around"
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: Competition of u.s championships, and a Event of all around has what average year? ### Input: CREATE TABLE table_name_61 (
    year INTEGER,
    competition VARCHAR,
    event VARCHAR
) ### Response: SELECT AVG(year) FROM table_name_61 WHERE competition = "u.s championships" AND event = "all around"