Name the 20 questions when centerfold model is cherie witter
{'header': ['Date', 'Cover model', 'Centerfold model', 'Interview subject', '20 Questions', 'Pictorials'], 'page_title': '', 'section_title': '', 'caption': '', 'rows': [['1-85', 'Goldie Hawn', 'Joan Bennett', 'Goldie Hawn', 'Diane Lane', 'Girls of Rock and Roll'], ['2-85', 'Julie McCullough', 'Cherie Witter', 'Steve Jobs', 'Brian De Palma', 'Girls of Texas , Janice Dickinson'], ['4-85', 'Natalie Smith, Donna Smith', 'Cindy Brooks', 'Wayne Gretzky', 'Joel Hyatt', 'Playmate sisters'], ['5-85', 'Karen Velez', 'Kathy Shower', 'Boy George', 'Marvin Hagler and Thomas Hearns', 'Vanity , Karen Velez - PMOY'], ['6-85', 'Roxanne Pulitzer', 'Devin DeVasquez', 'Sparky Anderson', 'Tom Watson [ disambiguation needed ]', 'Roxanne Pulitzer'], ['7-85', 'Tracy Vaccaro', 'Hope Marie Carlton', 'Rob Reiner', 'Jamie Lee Curtis', 'Grace Jones'], ['8-85', 'Kathy Shower', 'Cher Butler', 'Fidel Castro', 'Ron Howard', 'Judy Norton Taylor'], ['9-85', 'Madonna', 'Venice Kong', 'John Huston', 'Billy Crystal', 'Madonna, Brigitte Nielsen'], ['10-85', 'Sherry Arnett', 'Cynthia Brimhall', 'John DeLorean', 'Rosanna Arquette', 'Jerry Hall , Girls of the Pac-10'], ['11-85', 'Teri Weigel', 'Pamela Saunders', 'Sting', 'Don Johnson and Philip Michael Thomas', 'Women of Mensa']]}