CREATE TABLE table_name_79 (days VARCHAR, party VARCHAR, constituency VARCHAR)

What are the number of days did the ulster unionist Party have the constituate fermanagh and south tyrone?
SELECT days FROM table_name_79 WHERE party = "ulster unionist" AND constituency = "fermanagh and south tyrone"
SELECT "days" FROM "table_name_79" WHERE "constituency" = "fermanagh and south tyrone" AND "party" = "ulster unionist"