<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/54c874957eae4_-_husqvarna-yth1848xpt-s0607.jpg>
<http://www.popularmechanics.com/home/lawn-garden/how-to/a1631/4216335/>