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_31 (year_of_disaffiliation INTEGER, station VARCHAR, year_of_affiliation VARCHAR)
### Question:
What is the most recent year of disaffiliation of a CHCH-TV station that affiliated after 2001?
### Answer:
SELECT MAX(year_of_disaffiliation) FROM table_name_31 WHERE station = "chch-tv" AND year_of_affiliation > 2001