<http://schema.org/thumbnailUrl>
<http://www.imore.com/sites/imore.com/files/styles/thumbnail/public/field/image/2014/07/nature_journal_thumb.jpg?itok=zB3luN4W>
<http://www.imore.com/kids-projects-make-nature-journal-your-iphone-or-ipad-and-iphoto>