<http://schema.org/keywords>
"action, bird, duck, flap, male duck, movement, nature, ripples, rocking, swim, vibrant, water, waterfowl, wildlife, wings, wood duck"^^<http://www.w3.org/2001/XMLSchema#string>
<https://marketplace.500px.com/photos/24689335/rocking-woody-by-bill-tiepelman>