<prompt> Translate the following text to EnglishMifumo ya umma na binafsi ya ushirikiano wa majengo ya shirikisho na vifaa GAO-GGD-9223 - Februari 3, 1999  <response>: Public-Private Key Elements of Federal Buildings and Facility Partnerships GAOGGD-99-23, Feb. 3, 1999. 