user: Question: What 1st leg has Alense Vivaldi (Trentino) as Agg.?
Columns: ['Team 1', 'Agg.', 'Team 2', '1st leg', '2nd leg']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['A', 'Virtus Entella (Liguria)', '1–2', 'Asolo Fonte (Veneto B)', '0–0']
SQL:

assistant: SELECT "1st leg" FROM "Table" WHERE "Agg." = 'Alense Vivaldi (Trentino)';