What is the number of attendance values for ties having an opponent of Middlesbrough and result of 3-1?
CREATE TABLE table_name_2 (
    attendance VARCHAR,
    opponent VARCHAR,
    result VARCHAR
)
SELECT COUNT(attendance) FROM table_name_2 WHERE opponent = "middlesbrough" AND result = "3-1"
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What is the number of attendance values for ties having an opponent of Middlesbrough and result of 3-1? ### Input: CREATE TABLE table_name_2 (
    attendance VARCHAR,
    opponent VARCHAR,
    result VARCHAR
) ### Response: SELECT COUNT(attendance) FROM table_name_2 WHERE opponent = "middlesbrough" AND result = "3-1"