user: Question: What Silver has the Location of Guangzhou?
Columns: ['Year', 'Location', 'Gold', 'Silver', 'Bronze']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1990.0, 'Beijing', 'Wang Ping', 'Peng Ying', 'Ng Siu Ching']
SQL:

assistant: SELECT "Silver" FROM "Table" WHERE "Location" = 'Guangzhou';