<http://schema.org/contactOption>
"TollFree"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.firebox.com/product/5540/Boombero-Near-Field-Audio-Speaker?aff=512&awc=550_1351607725_21abd317f52f882355f7b6a8587de6cd>