user: Question: What round did the event UFC 86 take place?
Columns: ['Res.', 'Record', 'Opponent', 'Method', 'Event', 'Round', 'Location']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Win', '11–5–2', 'Justin Grizzard', 'TKO (punches)', 'Resurrection Fight Alliance', '1', 'Kearney, Nebraska , United States']
SQL:

assistant: SELECT "Round" FROM "Table" WHERE "Event" = 'UFC 86';