What is the sum of the rounds of the match with brett chism as the opponent?
CREATE TABLE table_60363 (
    "Res." text,
    "Record" text,
    "Opponent" text,
    "Method" text,
    "Event" text,
    "Round" real,
    "Time" text,
    "Location" text
)
SELECT SUM("Round") FROM table_60363 WHERE "Opponent" = 'brett chism'
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 is the sum of the rounds of the match with brett chism as the opponent? ### Input: CREATE TABLE table_60363 (
    "Res." text,
    "Record" text,
    "Opponent" text,
    "Method" text,
    "Event" text,
    "Round" real,
    "Time" text,
    "Location" text
) ### Response: SELECT SUM("Round") FROM table_60363 WHERE "Opponent" = 'brett chism'