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_15 (joined VARCHAR, conference_championships VARCHAR, nickname VARCHAR)
### Question:
What is the year joined with a Conference championships of 5, and a Nickname of wolfpack?
### Answer:
SELECT joined FROM table_name_15 WHERE conference_championships = 5 AND nickname = "wolfpack"