<http://schema.org/availability>
"http://schema.org/InStock"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.rvusa.com/rvs-for-sale/2017/yetti-fish-house-venture-65-x-14-v-fish-house-new-starbuck-minnesota-56381-1968164>