CREATE TABLE table_13243 ("Team 1" TEXT, "Agg." TEXT, "Team 2" TEXT, "1st leg" TEXT, "2nd leg" TEXT)

What was team 2 when team 1 was omonia?
SELECT "Team 2" FROM table_13243 WHERE "Team 1" = 'omonia'
SELECT "Team 2" FROM "table_13243" WHERE "Team 1" = 'omonia'