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_8 (tries_against INTEGER, tries_for VARCHAR, points_against VARCHAR, points_for VARCHAR)
### Question:
Which Tries against has Points against larger than 156, and Points for of 127, and Tries for larger than 17?
### Answer:
SELECT AVG(tries_against) FROM table_name_8 WHERE points_against > 156 AND points_for = 127 AND tries_for > 17