19.1.1. Twenty-nine percent (29%) of the aggregate purchase price due for such Interest (hereinafter, where appropriate, referred to as the "Aggregate Purchase Price') shall be paid on the closing date; and

19.1.2. The remainder of the Aggregate Purchase Price shall be paid in three (3) equal consecutive annual installments on each anniversary of the closing date over a period, beginning with the year following the calendar year in which the sale occurred (hereinafter referred to as the "Installment Payment Period").

19.1.3. Twenty-nine percent (29%) of the aggregate purchase price due for such Interest (hereinafter, where appropriate, referred to as the "Special Aggregate Purchase Price") shall be paid on the closing date; and

19.1.4. The remainder of the Special Aggregate Purchase Price shall be paid in three (3) equal consecutive annual installments on each anniversary of the closing date over a period, beginning with the year following the calendar year in which the date occurred (hereinafter referred to as the "Special Installment Payment Period").

19.1.5. Anything contained in this Section 19 to the contrary notwithstanding, the entire unpaid balance of the Aggregate Purchase Price and Special Aggregate Purchase Price shall become immediately due and payable upon the sale, exchange, transfer or other disposition of all or substantially all of the Property or assets of the Partnership.

19.1.6. The purchasing person shall pay simple interest at a rate shall be equal to the prime rate of interest then being charged by CitiBank, N.A., New York City, New York, to its highest credit-rated corporate borrowers on short term unsecured commercial borrowings on the unpaid balance of the Aggregate Purchase Price of Special Aggregate Purchase Price on each anniversary of the closing date during the Installment Payment Period or Special Installment Payment Period, as the case may be.