<http://schema.org/url>
<http://www.treehugger.com/green-food/all-on-the-table-cows-corn-gasoline-spinach-e-coli-and-grass.html>
<http://www.treehugger.com/green-food/all-on-the-table-cows-corn-gasoline-spinach-e-coli-and-grass.html>