CREATE TABLE table_44489 ("Team" TEXT, "Tries for" TEXT, "Tries against" TEXT, "Try diff" TEXT, "Points for" TEXT, "Points against" TEXT, "Points diff" TEXT)

What is Tries Against, when Try Diff is +15?
SELECT "Tries against" FROM table_44489 WHERE "Try diff" = '+15'
SELECT "Tries against" FROM "table_44489" WHERE "Try diff" = '+15'