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 (attendance VARCHAR, opponent VARCHAR, result VARCHAR)
### Question:
What is the number of attendance values for ties having an opponent of Middlesbrough and result of 3-1?
### Answer:
SELECT COUNT(attendance) FROM table_name_2 WHERE opponent = "middlesbrough" AND result = "3-1"