user: Question: Who was the 20 Questions section aimed at when Cover Model was Kimberley Conrad Hefner?
Columns: ['Date', 'Cover model', 'Centerfold model', 'Interview subject', '20 Questions']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['1-95', 'Drew Barrymore', 'Melissa Deanne Holliday', 'Jean-Claude Van Damme', 'Tom Snyder']
SQL:

assistant: SELECT "20 Questions" FROM "Table" WHERE "Cover model" = 'Kimberley Conrad Hefner';