<http://schema.org/thumbnailUrl>
<https://drscdn.500px.org/photo/20044221/w%3D160_h%3D160_s%3D1/baf93171bcb8c17e5ec7d2af7d8a1d9a>
<https://marketplace.500px.com/photos/20044221/time-to-shine-by-guy-highlander>