<prompt> Translate the following text to SwahiliTitle 31 defines an aagency- subject to GAOas authority very expansively, to mean a adepartment, agency, or instrumentality- of the United States government, but not the legislative branch or the Supreme Court.  <response>: Sura ya 31 inafafanua aagensi - chini ya mamlaka ya GAO - kwa njia pana sana, kumaanisha idara, shirika, au chombo cha serikali ya Marekani, lakini sio tawi la sheria au Mahakama Kuu. 