<http://schema.org/image>
<https://drscdn.500px.org/photo/20626017/w%3D600_s%3D1/d0f87aabb87a7ab42745d7a8986c42ea>
<https://marketplace.500px.com/photos/20626017/bug-in-iphone-4s-by-inderjith-gowthaman>