CREATE TABLE "first_round" (
  "team_num1" text,
  "agg_score" text,
  "team_num2" text,
  "1st_leg" text,
  "2nd_leg" text
);

Question: state team #2 in the match of first leg score 0-1
SQL: SELECT "team_num2" FROM "first_round" WHERE "1st_leg"='0-1';

Question: give the 1st leg score against ilisiakos
SQL: SELECT "1st_leg" FROM "first_round" WHERE "team_num2"='Ilisiakos';

Question: which team #1 played again chalkida
SQL: SELECT "team_num1" FROM "first_round" WHERE "team_num2"='Chalkida';

Question: which team#2 played against poseidon neoi porroi
SQL: SELECT "team_num2" FROM "first_round" WHERE "team_num1"='Poseidon Neoi Porroi';