user: Question: What was the score on the first leg when Gimnasia de Mendoza played at home for the second leg?
Columns: ['Home (1st leg)', 'Home (2nd leg)', '1st Leg', '2nd leg', 'Aggregate']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Belgrano', 'Atlético Tucumán', '2-0', '0-0', '2-0']
SQL:

assistant: SELECT "1st Leg" FROM "Table" WHERE "Home (2nd leg)" = 'Gimnasia de Mendoza';