user: Question: Which event is a Win by an opponent of Nicolas Smith, with the round marked N/A?
Columns: ['Res.', 'Record', 'Opponent', 'Method', 'Event', 'Round']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Win', '18-5-2', 'Dan New', 'Submission (rear naked choke)', 'TFC - Power Fights', '1']
SQL:

assistant: SELECT "Event" FROM "Table" WHERE "Res." = 'Win' AND "Round" = 'N/A' AND "Opponent" = 'Nicolas Smith';