CREATE TABLE table_53844 ("Team 1" TEXT, "Agg." TEXT, "Team 2" TEXT, "1st leg" TEXT, "2nd leg" TEXT)

who is the team 2 when the 2nd leg is 3-4?
SELECT "Team 2" FROM table_53844 WHERE "2nd leg" = '3-4'
SELECT "Team 2" FROM "table_53844" WHERE "2nd leg" = '3-4'