<http://schema.org/description>
"&lt;p&gt;Compacted graphite iron is increasingly used for diesel and racing engine components. The choice of cutting tool can dictate how effective shops are able to machine this challenging material.&lt;/p&gt;"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mmsonline.com/articles/challenges-in-cutting-cgi>