<http://schema.org/about>
"One of the miracles of daily life is the few moments of twilight that happen at the beginning and end of each day. Enjoying these minutes in a wild space makes them all the more incredible."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/slideshows/natural-sciences/photo-day-twilight-hour-over-wetlands/>