<http://schema.org/keywords>
"antarctica, thunderstorm, blue, cloud, cold temperature, ice, iceburg, landscape, nature, ocean, scenic, sculpture, sea, sky, snow, southern, storm, texture, water, winter"^^<http://www.w3.org/2001/XMLSchema#string>
<https://marketplace.500px.com/photos/15134671/antarctica-night-by-michael-leggero>