AN ORDINANCE AMENDING ORDINANCE NO. 7012, WHICH AUTHORIZES THE LEASE OF THAT PORTION OF THE PATRIMONIAL PROPERTY OF MANILA BOUNDED BY ADRIATICO, VITO CRUZ, A. MABINI AND THE MANILA ZOO TO THE TOURIST TRADE AND TRAVEL CORPORATION FOR TWENTY (20) YEARS BY EXTENDING THE PERIOD FOR ANOTHER TWENTY (20) YEARS, UNDER CERTAIN CONDITION.