<http://schema.org/description>
"Whether you're shopping for a fitness-tracker or in the early stages of training for a marathon, the issue of how much energy you burn in your day-to-day activities will likely rear ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/apps/2013/12/03/fuel-run-set-reminders/>