<http://schema.org/primaryImageOfPage>
"http://media.mnn.com/assets/images/2015/07/swiss-chard-and-spinach-pasta.jpg"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/food/recipes/photos/5-mediterranean-comfort-food-recipes/swiss-chard-and-spinach-pasta>