<http://schema.org/primaryImageOfPage>
"http://media.treehugger.com/assets/images/2011/10/apples-splashing-water-most-pesticides-in-fruit-photo.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/slideshows/green-food/12-fruits-with-the-most-pesticides/page/2/>