<prompt> Translate the following text to EnglishMbinu yake inategemea kusimama nyuma - kudumisha umbali uliowekwa - wakati masomo yake hujitundika, na kwa muda huo inafanya kazi kwa kushangaza.  <response>: His technique is based on standing back--maintaining a fixed distance--while his subjects hang themselves, and for a while that works stunningly. 