<http://schema.org/about>
"Video: On Mother Nature Network, watch the second segment of the  Captain Planet episode 'Summit to Save Earth 1' where the eco-villains try and ruin the World"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/family/family-activities/videos/captain-planet-summit-to-save-earth-1-part-2>