Question: What is the 1st leg for Instituto?
SQL: SELECT "1st Leg" FROM "2-14219514-2" WHERE "Home (2nd leg)" = 'Instituto';

Question: What Aggregate has a 2-1 1st leg, and is from Belgrano?
SQL: SELECT "Aggregate" FROM "2-14219514-2" WHERE "1st Leg" = '2-1' AND "Home (1st leg)" = 'Belgrano';

Question: What Aggregate has a 0-0 1st leg, and a 0-1 second leg?
SQL: SELECT "Aggregate" FROM "2-14219514-2" WHERE "1st Leg" = '0-0' AND "2nd leg" = '0-1';

Question: What aggregate has a 0-0 1st leg, and is from Instituto?
SQL: SELECT "Aggregate" FROM "2-14219514-2" WHERE "1st Leg" = '0-0' AND "Home (2nd leg)" = 'Instituto';

Question: What is the home of aggregate's 3-4?
SQL: SELECT "Home (2nd leg)" FROM "2-14219514-2" WHERE "Aggregate" = '3-4';