CREATE TABLE table_59764 ("Team 1" TEXT, "Agg." TEXT, "Team 2" TEXT, "1st leg" TEXT, "2nd leg" TEXT)

What is the 2nd leg if the 1st leg is 3-1 and the Team 2 is union sportive de la m dina d'alger?
SELECT "2nd leg" FROM table_59764 WHERE "1st leg" = '3-1' AND "Team 2" = 'union sportive de la médina d''alger'
SELECT "2nd leg" FROM "table_59764" WHERE "1st leg" = '3-1' AND "Team 2" = 'union sportive de la médina d\'alger'