<http://schema.org/about>
"The Leonardo Academy has announced the first meeting of the stakeholder group that will develop \"a national consensus standard for sustainable agriculture in the United States\". Scientific Certification Systems,  who developed"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/green-food/national-sustainable-agriculture-standards-debated.html>