text: For four weeks before the official premiere ( and in preparation for the impending removal of UPN in several markets by the debut of MyNetworkTV on September 5 , 2006 ) of Friday Night SmackDown !
simplified: For four weeks before the official start ( and in preparation for the impending removal of UPN in several markets by the start of MyNetworkTV on September 5 2006 ) of Friday Night SmackDown !