<http://schema.org/thumbnailUrl>
<https://drscdn.500px.org/photo/18545633/w%3D160_h%3D160_s%3D1/2e637a4c5615d4cb8060da781603fc62>
<https://marketplace.500px.com/photos/18545633/%25D1%2581%25D1%258B%25D1%2580%25D0%25BD%25D1%258B%25D0%25B9-%25D1%2581%25D1%2583%25D0%25BF-by-natalia-lisovskaya>