<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://wdy.h-cdn.co/assets/cm/15/09/640x430/54ebc2887921d_-_students-in-classroom-xl.jpg>
<http://www.womansday.com/life/pet-care/g1307/pit-bull-dogs/>