CREATE TABLE table_37842 ("Club" TEXT, "Played" TEXT, "Drawn" TEXT, "Lost" TEXT, "Points for" TEXT, "Points against" TEXT, "Tries for" TEXT, "Tries against" TEXT, "Try bonus" TEXT, "Losing bonus" TEXT)

What try bonus has 19 as the tries against?
SELECT "Try bonus" FROM table_37842 WHERE "Tries against" = '19'
SELECT "Try bonus" FROM "table_37842" WHERE "Tries against" = '19'