CREATE TABLE table_70630 ("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, "Points" TEXT)

How many tries for were there while having 479 points against?
SELECT "Tries for" FROM table_70630 WHERE "Points against" = '479'
SELECT "Tries for" FROM "table_70630" WHERE "Points against" = '479'