<http://schema.org/description>
"You stub your toe, and it begins to throb almost immediately. You wince as the pain takes hold for a moment and you can&amp;#039;t concentrate on anything else. But is some pain just in your head?"^^<http://www.w3.org/2001/XMLSchema#string>
<http://science.howstuffworks.com/life/evolution/is-pain-mental.htm>