<http://schema.org/description>
"White potatoes are the largest and most affordable source of potassium per serving of any vegetable or fruit, U.S. researchers said."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.upi.com/Health_News/2011/09/28/Potato-cheapest-source-of-potassium/UPI-12631317267688/>