<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/SearchAction>
<http://www.codingforums.com/graphics-and-multimedia-discussions/13371-whats-everyones-favorite-2d-3d-programs-why.html?s=844929892cb8d5d5690e49fe19edf059>