Base Offering Circular – Multifamily 89 Underlying Trust .......................  As to any Underlying Series, the related segregated Trust. U.S. Person................................  A Person that is (i) a citizen or resident of the United States; (ii) a corporation that is organized under the laws of the United States, any state thereof or the District of Columbia, including an entity treated as a corporation for federal income tax purposes; (iii) a partnership, including any entity treated as a partnership for federal income tax purposes (other than a partnership that is not treated as a United States person under any applicable Treasury regulation) organized under the laws of the United States, any state thereof, or the District of Columbia none of the interests of which are owned, directly or indirectly through one or more pass through entities, by any person that is not a U.S. Person within the meaning of this paragraph; (iv) an estate that is subject to United States federal income taxation regardless of the source of its income; (v) a trust if a court within the United States is able to exercise primary supervision over the administration of such trust and one or more United States persons have the authority to control all substantial decisions of the trust (or to the extent provided in the applicable Treasury regulations, certain trusts in existence on August 20, 1996, that are eligible to be treated as United States persons); or (vi) a foreign person who would be subject to United States income taxation on a net basis on income derived from the Residual Securities. Variable Rate Class...................  A Class with an Interest Rate that varies on a basis other than an index. Voting Rights ............................  The voting rights of the Securities. WAC or Weighted Average Certificate Rate.......................... For any Distribution Date, the per annum rate of interest equal to the average, expressed as a percentage, of the Certificate Rates of some or all Trust MBS in a Series or designated Trust Asset Group or Groups, weighted on the basis of the respective current principal balances of such Trust MBS immediately following the applicable Ginnie Mae Certificate Payment Date in the month preceding the month of that Distribution Date.  Such average interest rate may be subject to certain additions, subtractions, multiples, caps, floors and governors. Weighted Average Coupon Class .......................................... A Class whose Interest Rate is based on a Weighted Average Certificate Rate or Weighted Average Coupon Rate, as described in the related Offering Circular Supplement.