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_83 (network VARCHAR, year VARCHAR, colour_commentator_s_ VARCHAR)
### Question:
For which network was Chris Walby the color commentator after 1990?
### Answer:
SELECT network FROM table_name_83 WHERE year > 1990 AND colour_commentator_s_ = "chris walby"