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_2 (round VARCHAR, result VARCHAR, venue VARCHAR)
### Question:
What round has 2-1 as the result, and A as the venue?
### Answer:
SELECT round FROM table_name_2 WHERE result = "2-1" AND venue = "a"