CREATE TABLE table_56413 ("Player" TEXT, "Position" TEXT, "Date of Birth  ( Age ) " TEXT, "Caps" FLOAT, "Club/province" TEXT)

What is the date of birth of the player that has 11 caps and plays the prop position?
SELECT "Date of Birth (Age)" FROM table_56413 WHERE "Caps" = '11' AND "Position" = 'prop'
SELECT "Date of Birth (Age)" FROM "table_56413" WHERE "Caps" = '11' AND "Position" = 'prop'