user: Question: Who won gold in the games where Pan Cheng-Tsung won silver?
Columns: ['Year', 'Location', 'Gold', 'Silver', 'Bronze']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1982.0, 'New Delhi', 'Lakshman Singh', 'Rajiv Mohta', 'Tetsuo Sakata']
SQL:

assistant: SELECT "Gold" FROM "Table" WHERE "Silver" = 'Pan Cheng-Tsung';