user: Question: What is the most current year signed for separation of † and a separation year of 1997?
Columns: ['English name', 'Chinese name', 'Year signed', 'Year separated', 'Reason for separation']
Types: ['text', 'text', 'real', 'text', 'text']
Sample row: ['Bill Chan', '石修', 1971.0, '[Unknown]', '†']
SQL:

assistant: SELECT MAX("Year signed") FROM "Table" WHERE "Reason for separation" = '†' AND "Year separated" = '1997';