code: def time_context_from_dct(dct):
          
          time_text = dct.get('text')
          start = _get_time_stamp(dct.get('start'))
          end = _get_time_stamp(dct.get('end'))
          duration = dct.get('duration')
          tc = TimeContext(text=time_text, start=start, end=end,
                           duration=duration)
          return tc
docs: Return a time context object given a DCT entry.