<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/640x320/54cae7318ca68_-_messenger-0312-de.jpg>
<http://www.popularmechanics.com/space/deep-space/a7502/new-mercury-images-from-messenger-spacecraft-7529620/>