<http://schema.org/about>
"The heavy use of Monsanto's Roundup herbicide appears to be causing harmful changes in soil and potentially hindering yields of the genetically modified crops t"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/your-home/organic-farming-gardening/stories/roundup-herbicide-research-shows-plant-soil-problems>