<http://schema.org/about>
"Based on media coverage of fracking and occasional state- and city-level opposing it, it certainly seems like awareness of the issue is growing--both its potential for producing massive amounts of natural gas"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/corporate-responsibility/under-half-of-americans-are-aware-of-fracking-but-those-that-are-are-very-concerned-survey.html>