<http://schema.org/keywords>
"COMEX, COPPER, GOLD, SILVER, SUPPORT"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mcxcontrol.com/2015/07/20/mtechtips-gold-down-1-8-after-plunging-by-as-much-as-5-3-in-asia/>