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_6 (visitor VARCHAR, venue VARCHAR, round VARCHAR)
### Question:
Who is the visitor at the axa sports center in round 20?
### Answer:
SELECT visitor FROM table_name_6 WHERE venue = "axa sports center" AND round = 20