<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://sev.h-cdn.co/assets/cm/15/07/54db8dcadf21d_-_sev-taylor-swift-in-textbook-blog.jpg>
<http://www.seventeen.com/life/school/advice/a16863/doing-homework-for-college/>