How many rounds did the match go for the Bellator 72 event?
CREATE TABLE table_36229 (
    "Res." text,
    "Record" text,
    "Opponent" text,
    "Method" text,
    "Event" text,
    "Round" real,
    "Time" text,
    "Location" text
)
SELECT SUM("Round") FROM table_36229 WHERE "Event" = 'bellator 72'
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: How many rounds did the match go for the Bellator 72 event? ### Input: CREATE TABLE table_36229 (
    "Res." text,
    "Record" text,
    "Opponent" text,
    "Method" text,
    "Event" text,
    "Round" real,
    "Time" text,
    "Location" text
) ### Response: SELECT SUM("Round") FROM table_36229 WHERE "Event" = 'bellator 72'