CREATE TABLE table_31976 ("Candidate" TEXT, "Party" TEXT, "Constituency" TEXT, "Year" TEXT, "Days" TEXT)

What are the number of days did the ulster unionist Party have the constituate fermanagh and south tyrone?
SELECT "Days" FROM table_31976 WHERE "Party" = 'ulster unionist' AND "Constituency" = 'fermanagh and south tyrone'
SELECT "Days" FROM "table_31976" WHERE "Constituency" = 'fermanagh and south tyrone' AND "Party" = 'ulster unionist'