<http://schema.org/about>
"The Environmental Working Group put together the guide to help shoppers decide which foods are most important to buy certified organic or GE-free."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/food/healthy-eating/blogs/before-you-buy-that-papaya-get-the-shoppers-guide-to-avoiding-ge-foods>