<http://schema.org/thumbnailUrl>
<https://drscdn.500px.org/photo/7770359/w%3D160_h%3D160_s%3D1/974fb74fcb33534301580a3f0644eb20>
<https://marketplace.500px.com/photos/7770359/waiting-for-the-parade-by-yuji-higashino>