user: ### NOW ANSWER:
Question: What round did Takayo Hashi face Yoko Hattori?
Columns: ['Res.', 'Record', 'Opponent', 'Method', 'Round', 'Time', 'Location']
Types: ['text', 'text', 'text', 'text', 'real', 'text', 'text']
Sample row: ['Win', '14-4', 'Roxanne Modafferi', 'Decision (unanimous)', 2.0, '5:00', 'Koto, Tokyo , Japan']
SQL:

assistant: SELECT SUM("Round") FROM "Table" WHERE "Opponent" = 'Yoko Hattori';