user: Question: What is the location for the year under 2010 and the year Hei Zhi Hong won silver?
Columns: ['Year', 'Location', 'Gold', 'Silver', 'Bronze']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1990.0, 'Beijing', 'Chen Sitan', 'Wang Zengxiang', 'Nobutsugu Arai']
SQL:

assistant: SELECT "Location" FROM "Table" WHERE "Year" < 2010.0 AND "Silver" = 'Hei Zhi Hong';