<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/11/55005dc14e87e-flowers-on-porch-0610-s3.jpg>
<http://www.goodhousekeeping.com/home/gardening/advice/g2258/perfect-potted-plants/>