<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://esq.h-cdn.co/assets/cm/15/06/320x553/54d1c23c24067_-_esq-11-theory-38-0813-mdn-77311781.jpg>
<http://www.esquire.com/style/advice/g1584/theory-38-fall-2013/>