Who was the away team when the home team Manchester United played?
CREATE TABLE table_40372 (
    "Tie no" text,
    "Home team" text,
    "Score" text,
    "Away team" text,
    "Attendance" text
)
SELECT "Away team" FROM table_40372 WHERE "Home team" = 'manchester united'
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: Who was the away team when the home team Manchester United played? ### Input: CREATE TABLE table_40372 (
    "Tie no" text,
    "Home team" text,
    "Score" text,
    "Away team" text,
    "Attendance" text
) ### Response: SELECT "Away team" FROM table_40372 WHERE "Home team" = 'manchester united'