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_1817879_2 (date_opened VARCHAR, segment_description VARCHAR)
### Question:
What date of segment description red line mos-2 north open?
### Answer:
SELECT date_opened FROM table_1817879_2 WHERE segment_description = "Red Line MOS-2 North"