<prompt> tafsiri zifuatazo kutoka kwa swahili hadi kiingereza.mwanamasumbwi wa kenya brian agina ametoweka katika mji wa gold coast, nchini australia baada ya kumalizika kwa michezo ya jumuiya ya madola jumapili iliyopita.  <response>: kenyan boxer brian agina has gone missing in gold coast, australia, just after the completion of the 21st edition of the commonwealth games on sunday. 