<http://schema.org/keywords>
"cat, animal, cute, eye, green, evil, kitty, cool, focus, perfect, nice, awesome, beuatiful"^^<http://www.w3.org/2001/XMLSchema#string>
<https://marketplace.500px.com/photos/8266994/eye-of-the-cat-by-nicolay-kj%25C3%25A6rnet>