user: Question: What was the 1st leg that had a 4-2 aggregate?
Columns: ['Home (1st leg)', 'Home (2nd leg)', '1st Leg', '2nd leg', 'Aggregate']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Independiente', 'Ramón Santamarina', '3-1', '3-2', '6-3']
SQL:

assistant: SELECT "1st Leg" FROM "Table" WHERE "Aggregate" = '4-2';