CREATE TABLE "round_of_16" (
  "team_num1" text,
  "points" text,
  "team_num2" text,
  "1st_leg" text,
  "2nd_leg" text
);

Question: What was the 2nd leg for team #1 River Plate?
SQL: SELECT "2nd_leg" FROM "round_of_16" WHERE "team_num1"='River Plate';

Question: What was team number 2's Fluminense's 2nd leg?
SQL: SELECT "2nd_leg" FROM "round_of_16" WHERE "team_num2"='Fluminense';