<http://schema.org/description>
"&lt;p&gt;In many difficult hole making applications, the best way (and often the only way) to form internal threads is with electrical discharge machining.&lt;/p&gt;"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mmsonline.com/articles/don39t-overlook-edm-tapping>