Complex sentence: In August 2013 several people died in Siorapaluk from eating kiviak that was made from eider rather than auk, which do not ferment as well and gave those that ate it botulism.
Split into simpler sentences: In August 2013 several people died in Siorapaluk from eating kiviak that was made from eider rather than auk. Eider does not ferment as well auk; and gave those that ate it botulism.