What was the away team score for the game with a crowd of 5391?
CREATE TABLE table_20771 (
    "Home team" text,
    "Home team score" text,
    "Away team" text,
    "Away team score" text,
    "Ground" text,
    "Crowd" real,
    "Date" text
)
SELECT "Away team score" FROM table_20771 WHERE "Crowd" = '5391'
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 was the away team score for the game with a crowd of 5391? ### Input: CREATE TABLE table_20771 (
    "Home team" text,
    "Home team score" text,
    "Away team" text,
    "Away team score" text,
    "Ground" text,
    "Crowd" real,
    "Date" text
) ### Response: SELECT "Away team score" FROM table_20771 WHERE "Crowd" = '5391'