<prompt> tafadhali geuza maudhui haya ya swahili kwenda kwa kiingereza.nguyen ngoc wa nhu quyn bloga wa vietnam hakuweza kuhudhuria kwa sababu amehukumiwa kifungo jela.  <response>: the chinese dissident liu xiaobo was unable to attend the 2010 nobel peace prize ceremony in oslo because he had been jailed by state authorities. 