<http://schema.org/keywords>
"4x5, bishop, breeze, color negative, eastern sierras, ektar, ektar 100, film, grassland, kodak, large format, mountains, owens valley, prairie, sagebrush, sierra, sunset, toyo, twilight, wind, 45a"^^<http://www.w3.org/2001/XMLSchema#string>
<https://marketplace.500px.com/photos/33000647/sierra-wind-by-eric-bryan>