CREATE TABLE table_43060 ("Date" TEXT, "Cover model" TEXT, "Centerfold model" TEXT, "Interview subject" TEXT, "20 Questions" TEXT)

Who was the Cover model when the Centerfold Model was Marketa Janska?
SELECT "Cover model" FROM table_43060 WHERE "Centerfold model" = 'marketa janska'
SELECT "Cover model" FROM "table_43060" WHERE "Centerfold model" = 'marketa janska'