user: Question: At what event did he fight Takaharu Murahama?
Columns: ['Res.', 'Record', 'Opponent', 'Method', 'Event', 'Round', 'Time']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['Draw', '10-14-6', 'Hidetaka Monma', 'Draw', 'DEEP - 47 Impact', 3.0, '5:00']
SQL:

assistant: SELECT "Event" FROM "Table" WHERE "Opponent" = 'Takaharu Murahama';