<http://schema.org/keywords>
"landscape, switzerland, tree, ski, shadow, snow, chair, shadows, swiss, high, horn, alps, skiing, lift, suisse, bahn, snowy, slope, schweiz, alpen, paraglider, slopes, chairlift, baum, sessel, landschaft, schnee, schatten, weiss, gondel, alp, schirm, graub\u00C3\u00BCnden, paraglide, arosa, weisshorn, gleitschirm, skilift, ski-lift, sessellift, sessel-lift, gondelbahn, chair-lift, snowshadows, snowshadow, schneeschatten, gleit, paragliding"^^<http://www.w3.org/2001/XMLSchema#string>
<https://marketplace.500px.com/photos/18458845/snowy-landscape-schnee-landschaft-arosa-gleitschirm-by-eric-peter>