SCHEMA:
CREATE TABLE table_name_28 (mountain_range VARCHAR, mountain_peak VARCHAR, state VARCHAR, rank VARCHAR)
USER:
what is the mountain range when the state is colorado, rank is higher than 90 and mountain peak is whetstone mountain?

QUERY:
SELECT mountain_range FROM table_name_28 WHERE state = "colorado" AND rank > 90 AND mountain_peak = "whetstone mountain"