user: Question: Which Opponent has a Time of 4:51?
Columns: ['Res.', 'Record', 'Opponent', 'Method', 'Event', 'Round', 'Time', 'Location']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text', 'text']
Sample row: ['Win', '19–15', 'Elton Rodrigues', 'TKO (punches)', 'Warriors of God', 1.0, '1:37', 'Uberlandia , Minas Gerais, Brazil']
SQL:

assistant: SELECT "Opponent" FROM "Table" WHERE "Time" = '4:51';