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_1241987_1 (year INTEGER, regular_season VARCHAR)
### Question:
What is the lowest year that regular season is 4th, Rocky Mountain?
### Answer:
SELECT MIN(year) FROM table_1241987_1 WHERE regular_season = "4th, Rocky Mountain"