user: Question: What is the Second when the third is Don Walchuk?
Columns: ['Season', 'Skip', 'Third', 'Second', 'Lead']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['1984–85', 'Kevin Martin', 'Richard Feeney', 'Dan Petryk', 'Michael Berger']
SQL:

assistant: SELECT "Second" FROM "Table" WHERE "Third" = 'Don Walchuk';