<http://schema.org/image>
<https://drscdn.500px.org/photo/8821706/w%3D600_s%3D1/6e555f99a2716ca29ae06d5fafcbba4b>
<https://marketplace.500px.com/photos/8821706/twilight-and-the-cross-by-teerayut-hiruntaraporn>