<http://schema.org/thumbnailUrl>
<https://drscdn.500px.org/photo/17010013/w%3D160_h%3D160_s%3D1/5d2e7c0c72b24029d18b0efddb2ff352>
<https://marketplace.500px.com/photos/17010013/reflection-by-sudipta-mukhopadhyay>