Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_91 (away_team VARCHAR, date VARCHAR, home_team VARCHAR)
### Question:
Who was the away team when Manchester United played at home on 10 February 1951?
### Answer:
SELECT away_team FROM table_name_91 WHERE date = "10 february 1951" AND home_team = "manchester united"