Name the sum of FA cup when league cup is less than 0
CREATE TABLE table_15725 (
    "Name" text,
    "League" real,
    "FA Cup" real,
    "League Cup" real,
    "Other" real,
    "Total" real
)
SELECT SUM("FA Cup") FROM table_15725 WHERE "League Cup" < '0'
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 FA cup when league cup is less than 0 ### Input: CREATE TABLE table_15725 (
    "Name" text,
    "League" real,
    "FA Cup" real,
    "League Cup" real,
    "Other" real,
    "Total" real
) ### Response: SELECT SUM("FA Cup") FROM table_15725 WHERE "League Cup" < '0'