user: Question: When did Pakistan win a Silver Medal in a Men's competition?
Columns: ['Medal', 'Name', 'Games', 'Sport', 'Event']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Silver', 'National team', '1956 Melbourne', 'Field hockey', "Men's competition"]
SQL:

assistant: SELECT "Games" FROM "Table" WHERE "Event" = 'Men''s competition' AND "Medal" = 'Silver';