Name the sum of year when start is less than 30
CREATE TABLE table_68213 (
    "Year" real,
    "Manufacturer" text,
    "Start" real,
    "Finish" real,
    "Team" text
)
SELECT SUM("Year") FROM table_68213 WHERE "Start" < '30'
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: Name the sum of year when start is less than 30 ### Input: CREATE TABLE table_68213 (
    "Year" real,
    "Manufacturer" text,
    "Start" real,
    "Finish" real,
    "Team" text
) ### Response: SELECT SUM("Year") FROM table_68213 WHERE "Start" < '30'