which team#2 played against poseidon neoi porroi
CREATE TABLE "first_round" (
  "team_num1" text,
  "agg_score" text,
  "team_num2" text,
  "1st_leg" text,
  "2nd_leg" text
);
SELECT "team_num2" FROM "first_round" WHERE "team_num1"='Poseidon Neoi Porroi';