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_21 (years VARCHAR, role VARCHAR)
### Question:
How many years did the role of Steve Rhoades last?
### Answer:
SELECT years FROM table_name_21 WHERE role = "steve rhoades"