user: ### NOW ANSWER:
Question: If the second leg is Instituto, what is the total number of aggregate?
Columns: ['Home (1st leg)', 'Home (2nd leg)', '1st Leg', '2nd leg', 'Aggregate']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Guaraní', 'Platense', '0-0', '0-1', '0-1']
SQL:

assistant: SELECT COUNT("Aggregate") FROM "Table" WHERE "Home (2nd leg)" = 'Instituto';