Forty percent of the annual real property taxes imposed by Chapter 8 of this title on the real property described as Lot 40, Square 377, that is owned by The Pew Charitable Trusts, shall be abated for 30 years; provided, that the real property continues to be owned by The Pew Charitable Trusts during the duration of the abatement period.
D.C. Code § 47-4637