<http://schema.org/availability>
"http://schema.org/InStock"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.rvusa.com/rvs-for-sale/2017/forest-river-toy-hauler-29hfs-xlr-hyper-lite-toy-hauler-new-linn-creek-missouri-65052-1905560>