<http://schema.org/keywords>
"lion, cat, panthera leo, mane, male, wildlife, desert, fauna, grass, mammal, predator, africa, african, dangerous, king, nature, wilderness, furry, animal, etosha, etosha national park, namibia"^^<http://www.w3.org/2001/XMLSchema#string>
<https://marketplace.500px.com/photos/11904155/lion-in-the-grass-by-grobler-du-preez>