user: Question: Which round was 2:30?
Columns: ['Res.', 'Record', 'Opponent', 'Method', 'Event', 'Round', 'Time', 'Location']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Win', '23-11–1', 'Doo Won Seo', 'Submission (arm triangle choke)', 'ROAD FC 11', '2', '2:24', 'Seoul , South Korea']
SQL:

assistant: SELECT "Round" FROM "Table" WHERE "Time" = '2:30';