<http://schema.org/thumbnailUrl>
<http://si.wsj.net/public/resources/images/BN-DI867_0620fo_E_20140620111419.jpg>
<http://www.wsj.com/articles/how-we-eat-the-gluten-free-craze-is-it-healthy-1403491041?mod=Life_and_Culture_newsreel_1>