user: Question: what is the event when the opponent is Yuji Hisamatsu?
Columns: ['Res.', 'Record', 'Opponent', 'Method', 'Event', 'Round', 'Location']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Loss', '20-17', 'Gennadiy Kovalev', 'TKO (punches)', 'Rings - Reincarnation', '2', 'Tokyo, Japan']
SQL:

assistant: SELECT "Event" FROM "Table" WHERE "Opponent" = 'Yuji Hisamatsu';