<http://schema.org/keywords>
"SINKHOLE"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.thestar.com.my/News/Community/2014/05/30/Drilling-in-critical-areas-to-go-on-till-July-CEO-Teams-prepared-to-deal-with-sinkhole-if-it-occurs/>