user: Question: What round had a record of 4-1?
Columns: ['Res.', 'Record', 'Opponent', 'Method', 'Event', 'Round']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Loss', '8-2', 'David Heath', 'Submission (rear naked choke)', 'UFC 62', '1']
SQL:

assistant: SELECT "Round" FROM "Table" WHERE "Record" = '4-1';