What's the average year for the accolade 100 greatest singles of all time?
CREATE TABLE table_47652 (
    "Year" real,
    "Publication" text,
    "Country" text,
    "Accolade" text,
    "Rank" real
)
SELECT AVG("Year") FROM table_47652 WHERE "Accolade" = '100 greatest singles of all time'
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's the average year for the accolade 100 greatest singles of all time? ### Input: CREATE TABLE table_47652 (
    "Year" real,
    "Publication" text,
    "Country" text,
    "Accolade" text,
    "Rank" real
) ### Response: SELECT AVG("Year") FROM table_47652 WHERE "Accolade" = '100 greatest singles of all time'