<http://schema.org/thumbnailUrl>
<https://drscdn.500px.org/photo/23220005/w%3D160_h%3D160_s%3D1/0a0d2b05413526fa3b31ea3f7f17d8bd>
<https://marketplace.500px.com/photos/23220005/the-brass-fighters-by-orest-mykhalchyshyn>