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

Question: What was the aggregate for a team #2 of Okk Beograd?
SQL: SELECT "agg" FROM "first_round" WHERE "team_num2"='okk beograd';

Question: What was the 2nd leg score for Chemie Halle?
SQL: SELECT "2nd_leg" FROM "first_round" WHERE "team_num1"='chemie halle';