<http://schema.org/description>
"National nutrition guidelines emphasize consumption of &amp;quot;powerhouse fruits and vegetables&amp;quot; known as PFV -- or foods associated with reduced chronic disease risk."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.upi.com/Health_News/2014/06/06/Watercress-Chinese-cabbage-chard-top-list-of-powerhouse-fruits-and-vegetables/4551402062349/?spt=mps&or=1>