CREATE TABLE table_41913 ("Date" CLOB, "Cover model" CLOB, "Centerfold model" CLOB, "Interview subject" CLOB, "20 Questions" CLOB)

Who was the Centerfold model on 5-88?
SELECT "Centerfold model" FROM table_41913 WHERE "Date" = '5-88'
SELECT "Centerfold model" FROM "table_41913" WHERE "Date" = '5-88'