<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://clv.h-cdn.co/assets/cm/15/09/54eaf0117515d_-_barberry-foliage-garden0906-de-36199882.jpg>
<http://www.countryliving.com/gardening/garden-ideas/tips/g769/most-common-nursery-mistakes-0409/>