CREATE TABLE table_name_84 (joined INTEGER, conference_championships VARCHAR, institution VARCHAR)
SELECT MAX(joined) FROM table_name_84 WHERE conference_championships = 5 AND institution = "university of north carolina"
ปีล่าสุดที่เข้าร่วมกับ Conference Championships 5 รายการและ Institution of University of North Carolina คืออะไร?
What is the latest year joined with a Conference championships of 5, and an Institution of university of north carolina?