<http://schema.org/description>
"Whether you drove a car, got on your bike or took Muni today, your journey began and ended on foot. That trip you took today was just one of the 1 million walking trips we see daily in San Francisco."^^<http://www.w3.org/2001/XMLSchema#string>
<http://archives.sfexaminer.com/sanfrancisco/we-can-create-a-more-walkable-city/Content?oid=2743609>