<prompt> Translate the following text to SwahiliCastro was incarcerated on the Isle of Pines now called the Isla de la Juventud until May 1955, when Batista granted an amnesty to political prisoners.  <response>: Castro alifungwa katika gereza la kisiwa cha Pines sasa kinaitwa Isla de la Juventud hadi Mei 1955, wakati Batista alipotoa msamaha kwa wafungwa wa kisiasa. 