In the game where the home team scored 19.21 (135), who was the away team?
CREATE TABLE table_52439 (
    "Home team" text,
    "Home team score" text,
    "Away team" text,
    "Away team score" text,
    "Venue" text,
    "Crowd" real,
    "Date" text
)
SELECT "Away team" FROM table_52439 WHERE "Home team score" = '19.21 (135)'
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: In the game where the home team scored 19.21 (135), who was the away team? ### Input: CREATE TABLE table_52439 (
    "Home team" text,
    "Home team score" text,
    "Away team" text,
    "Away team score" text,
    "Venue" text,
    "Crowd" real,
    "Date" text
) ### Response: SELECT "Away team" FROM table_52439 WHERE "Home team score" = '19.21 (135)'