Which was the team 1 that had a team 2 which was avigliano (basilicata)?
CREATE TABLE "first_round" (
  "team_1" text,
  "agg" text,
  "team_2" text,
  "1st_leg" text,
  "2nd_leg" text
);
SELECT "team_1" FROM "first_round" WHERE "team_2"='avigliano (basilicata)';