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_56 (surface VARCHAR, tournament VARCHAR, round VARCHAR)
### Question:
Name the surface for united airlines tournament of champions final round
### Answer:
SELECT surface FROM table_name_56 WHERE tournament = "united airlines tournament of champions" AND round = "final"