user: Question: What's the total number of rounds with a win result at the sf 5: stadium event?
Columns: ['Res.', 'Record', 'Opponent', 'Method', 'Event', 'Round', 'Time', 'Location']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text', 'text']
Sample row: ['Win', '22–2', 'Ryan Bader', 'TKO (punches)', 'UFC Fight Night: Teixeira vs. Bader', 1.0, '2:55', 'Belo Horizonte , Minas Gerais , Brazil']
SQL:

assistant: SELECT COUNT("Round") FROM "Table" WHERE "Res." = 'win' AND "Event" = 'sf 5: stadium';