<prompt> unaweza kugeuza matini haya ya swahilikwa kiingereza?mhifadhi wa wanyama ambaye alitekeleza jukumu muhimu katika kuwarejesha tena faru weusi wa mashariki nchini rwanda, ameuawa na mmoja wa wanyama hao.  <response>: a conservationist who played a key role in reintroducing the eastern black rhino to rwanda has been killed by one of the animals, a wildlife group says. 