Crispus Attucks Development Corporation, lot 0046 in square 3117.

The real property located at 77 U Street, N.W., Washington, D.C., lot 0046 in square 3117, shall be exempt from all taxation so long as it is used to carry out the public purposes and activities of the Crispus Attucks Development Corporation and is not used for commercial purposes, subject to the provisions of §§ 47-1005 , 47-1007 , and 47-1009 .