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_61 (year VARCHAR, color_commentator_s_ VARCHAR)
### Question:
For how many years combined were Frank Gifford and Dan Dierdorf color commentators?
### Answer:
SELECT COUNT(year) FROM table_name_61 WHERE color_commentator_s_ = "frank gifford and dan dierdorf"