CREATE TABLE "round_16" (
  "team_1" text,
  "agg" text,
  "team_2" text,
  "1st_leg" text,
  "2nd_leg" text
);

Question: Which 2nd leg came after a 1st leg of 0-3?
SQL: SELECT "2nd_leg" FROM "round_16" WHERE "1st_leg"='0-3';

Question: For a Team 1 of Al-Merrikh, what was the aggregate?
SQL: SELECT "agg" FROM "round_16" WHERE "team_1"='al-merrikh';

Question: Who was the Team 1 for a 2nd leg of 1-4?
SQL: SELECT "team_1" FROM "round_16" WHERE "2nd_leg"='1-4';

Question: For an aggregate of 1-3, what was the 2nd leg?
SQL: SELECT "2nd_leg" FROM "round_16" WHERE "agg"='1-3';

Question: For a team 2 of Al-Faisaly, what was the 2nd leg?
SQL: SELECT "2nd_leg" FROM "round_16" WHERE "team_2"='al-faisaly';