Who was the Team 1 for a 2nd leg of 1-4?
CREATE TABLE "round_16" (
  "team_1" text,
  "agg" text,
  "team_2" text,
  "1st_leg" text,
  "2nd_leg" text
);
SELECT "team_1" FROM "round_16" WHERE "2nd_leg"='1-4';