When they played Universidad de Chile, what was the score of the first leg?
CREATE TABLE table_21445 (
    "Team #1" text,
    "Points" text,
    "Team #2" text,
    "1st leg" text,
    "2nd leg" text
)
SELECT COUNT("1st leg") FROM table_21445 WHERE "Team #2" = 'Universidad de Chile'
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: When they played Universidad de Chile, what was the score of the first leg? ### Input: CREATE TABLE table_21445 (
    "Team #1" text,
    "Points" text,
    "Team #2" text,
    "1st leg" text,
    "2nd leg" text
) ### Response: SELECT COUNT("1st leg") FROM table_21445 WHERE "Team #2" = 'Universidad de Chile'