<prompt> Translate the following text to SwahiliFurther, our work has shown that U.S. agencies have benefited from their use of results-oriented performance agreements for political and senior career executives.  <response>: Kwa kuongezea, utafiti wetu umeonyesha kuwa mashirika ya Marekani yamenufaika na matumizi yao ya makubaliano ya utendaji wa matokeo kwa watendaji wa kisiasa na wa juu wa kazi. 