<http://schema.org/description>
"Your body is a remarkable piece of biological machinery, and your limbs are no exception. Did you ever wonder how prosthetic limbs are made and how they are controlled? And are scientists developing bionic artificial limbs?"^^<http://www.w3.org/2001/XMLSchema#string>
<http://science.howstuffworks.com/prosthetic-limb2.htm>