<http://schema.org/about>
"With all of the conflicting studies about caffeine's effect on the body, should you shun the pick-me-up or have a second cup? According to the Mayo Clinic, mode"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/health/fitness-well-being/stories/coffee-friend-or-foe>