<http://schema.org/about>
"Carpeting may be something we give little thought to, but the ubiquitous floor covering is actually a serious environmental problem. Not only are toxic chemicals often used in the making of most carpeting, they are"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/clean-technology/new-formula-for-carpeting-eliminates-latex-makes-it-biodegradable.html>