<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/54cb1bf2cd306_-_cloud-collaboration-02-0913-mdn.jpg>
<http://www.popularmechanics.com/home/how-to/a9512/how-to-collaborate-in-the-cloud-15947489/>