CREATE TABLE table_1748 ("Club" TEXT, "Played" TEXT, "Won" TEXT, "Drawn" TEXT, "Lost" TEXT, "Points for" TEXT, "Points against" TEXT, "Tries for" TEXT, "Tries against" TEXT, "Try bonus" TEXT, "Losing bonus" TEXT, "Points" TEXT)

For club Swansea Uplands RFC, what is the amount of tries against?
SELECT "Tries against" FROM table_1748 WHERE "Club" = 'Swansea Uplands RFC'
SELECT "Tries against" FROM "table_1748" WHERE "Club" = 'Swansea Uplands RFC'