<http://schema.org/primaryImageOfPage>
"http://media.mnn.com/assets/images/2009/12/prettytree.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/your-home/at-home/photos/5-steps-to-reusing-your-christmas-tree/pack-it-up>