When any person by the use of signs, circulars, cards, telephone directories or newspapers advertises, holds out or represents that he or she is in business in the city, or when any person holds an active license or permit issued by a governmental agency indicative that he or she is in business is the city, and such person fails to deny by a sworn statement given to the Collector that he or she is not conducting a business in the city after being requested to do so by the Collector, such facts shall be considered prima facie evidence that such person is conducting a business in the city.
(`78 Code, § 5.02.210.)