CREATE TABLE table_37840 ("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 is the try bonus that has llangefni rfc as the club?
SELECT "Try bonus" FROM table_37840 WHERE "Club" = 'llangefni rfc'
SELECT "Try bonus" FROM "table_37840" WHERE "Club" = 'llangefni rfc'