Table: celeb_magazine
Columns: date
cover_model
centerfold_model
interview_subject
20_questions
pictorials

Question: How many times was Jillian Grace the centerfold model?
SQL: SELECT COUNT("date") FROM celeb_magazine WHERE "centerfold_model" = 'Jillian Grace'

Question: What were the interview subjects on those occasions where Bai Ling was the cover model?
SQL: SELECT "interview_subject" FROM celeb_magazine WHERE "cover_model" = 'Bai Ling'

Question: How many total interview subjects wererthere when the centerfold model was Tamara Witmer?
SQL: SELECT COUNT("interview_subject") FROM celeb_magazine WHERE "centerfold_model" = 'Tamara Witmer'

Question: What's the subject of 20 questions in those issues where Jillian Grace is the centerfold model?
SQL: SELECT "20_questions" FROM celeb_magazine WHERE "centerfold_model" = 'Jillian Grace'

Question: Who were the cover model(s) on the 4-05 issue?
SQL: SELECT "cover_model" FROM celeb_magazine WHERE "date" = '4-05'

Question: Who was on the cover when the 20 questions subject was Scarlett Johansson?
SQL: SELECT "cover_model" FROM celeb_magazine WHERE "20_questions" = 'Scarlett Johansson'