<prompt> Translate the following text to EnglishKaburi la Al-Mansur Kalawan liko katikati ya jengo hilo na limezungukwa na vioo maridadi vya Kiislamu vyenye mapambo mengi.  <response>: The tomb of Al-Mansur Kalawan is at the heart of the complex and is surrounded by beautiful screens of ornate Islamic fretwork. 