CREATE TABLE "round_of_16" (
  "team_1" text,
  "agg" text,
  "team_2" text,
  "1st_leg" text,
  "2nd_leg" text
);

Question: Name the 2nd leg for team 1 of hamburg
SQL: SELECT "2nd_leg" FROM "round_of_16" WHERE "team_1"='hamburg';