<prompt> Translate the following text to SwahiliMr. Casellas began his career at the Philadelphia law firm Montgomery, McCracken, Walker and Rhoads, where he worked for sixteen years.  <response>: Casellas alianza kazi yake katika kampuni ya sheria ya Philadelphia Montgomery, McCracken, Walker na Rhoads, ambapo alifanya kazi kwa miaka kumi na sita. 