<prompt> tafsiri zifuatazo kutoka kwa swahili hadi kiingereza.lakini wachunguzi walioajiriwa na shirikisho la fursa la kimataifa iff wanasema wamefunua ushahidi unaojitokeza kuwa video hiyo ilikuwa ngumu.  <response>: the investigators hired by the international fur federation iff claim they have unearthed evidence that the video was a stunt. 