<https://secure.gravatar.com/avatar/d2483c0ee1352d17593bfa3ad5f50757?s=96&amp;d=mm&amp;r=r>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://theprepperjournal.com/2013/04/05/prepping-survival-communications/>