user: Question: Which event was in round 1, resulted in a Win, and a record of 15-4?
Columns: ['Res.', 'Record', 'Opponent', 'Method', 'Event', 'Round', 'Time', 'Location']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text', 'text']
Sample row: ['Win', '19-6', 'Genkaam Lookjuapoakum', 'Submission (armbar)', 'Deep: 33rd Impact', 1.0, '1:54', 'Tokyo , Japan']
SQL:

assistant: SELECT "Event" FROM "Table" WHERE "Round" = 1.0 AND "Res." = 'Win' AND "Record" = '15-4';