CREATE TABLE table_51398 ("Player" TEXT, "Position" TEXT, "Date of Birth  ( Age ) " TEXT, "Caps" FLOAT, "Club/province" TEXT)

What is the date of birth of Kameli Ratuvou?
SELECT "Date of Birth (Age)" FROM table_51398 WHERE "Player" = 'kameli ratuvou'
SELECT "Date of Birth (Age)" FROM "table_51398" WHERE "Player" = 'kameli ratuvou'