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

Question: What is the 1st leg in the match where Remo (PA) is team 1?
SQL: SELECT "1st_leg" FROM "round_of_sixteen" WHERE "team_1"='remo (pa)';

Question: Who is team 1 where team 2 is Fluminense (RJ)?
SQL: SELECT "team_1" FROM "round_of_sixteen" WHERE "team_2"='fluminense (rj)';