<http://www.w3.org/1999/02/22-rdf-syntax-ns#rest>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#nil>
<http://www.popularmechanics.com/adventure/outdoors/a8779/the-gear-you-need-to-climb-the-trees-15293240/?click=pm_news>