Table: playboy_models_10
Columns: date
cover_model
centerfold_model
interview_subject
20_questions

Question: Which Cover model has a 20 Questions of christina applegate?
SQL: SELECT "cover_model" FROM playboy_models_10 WHERE "20_questions" = 'christina applegate'

Question: When has a Centerfold model of krista kelly?
SQL: SELECT "date" FROM playboy_models_10 WHERE "centerfold_model" = 'krista kelly'

Question: Which 20 Questions has a Cover model of rena mero , torrie wilson (two alternative covers)?
SQL: SELECT "20_questions" FROM playboy_models_10 WHERE "cover_model" = 'rena mero , torrie wilson (two alternative covers)'

Question: When Centerfold model is on 3-04?
SQL: SELECT "centerfold_model" FROM playboy_models_10 WHERE "date" = '3-04'

Question: Which Cover model has a Centerfold model of scarlett keegan?
SQL: SELECT "cover_model" FROM playboy_models_10 WHERE "centerfold_model" = 'scarlett keegan'

Question: When has a Centerfold model of pilar lastra?
SQL: SELECT "date" FROM playboy_models_10 WHERE "centerfold_model" = 'pilar lastra'