<http://schema.org/keywords>
"Corn Yields: As most of us know the trade had already been discounting the USDA's yield of 166 bushel per acre and in fact most in the trade seemed to be trading a number closer to 160 bushels per acre. Now all of a sudden"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.agweb.com/blog/current_marketing_thoughts_140/corn_yields_and_ethanol_demand/>