<http://schema.org/about>
"A United Nations report has once again stressed that the key to increasing food production so that the world's coming nine billion people can be fed without increasing climate change and further reducing biodiversity, is small-scale sustainable"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/sustainable-agriculture/small-scale-sustainable-farming-key-to-global-food-security-poverty-reduction-un.html>