<http://schema.org/thumbnailUrl>
<https://drscdn.500px.org/photo/8916994/w%3D160_h%3D160_s%3D1/a106b419dbf95925bf9b42ce482eff40>
<https://marketplace.500px.com/photos/8916994/making-love-by-the-moonlight-by-robert-k-baggs>