<http://schema.org/keywords>
"Oil and Gas Exploration and Production (TRBC)"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.reuters.com/article/2013/01/18/freeport-plains-mcmoranexploration-idUSL4N0AM83Z20130118?feedType=RSS&feedName=basicMaterialsSector>