CREATE TABLE table_14219514_1 (home__1st_leg_ VARCHAR)

Who was in 2nd leg when Boca Juniors was in home (1st leg)?
SELECT 2 AS nd_leg FROM table_14219514_1 WHERE home__1st_leg_ = "Boca Juniors"
SELECT 2 AS "nd_leg" FROM "table_14219514_1" WHERE "Boca Juniors" = "home__1st_leg_"