<http://schema.org/about>
"The most widespread water quality problem in the US isn't caused by large commercial operations, but rather from residential yards. Here's one simple solution to the issue."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/lawn-garden/heres-one-simple-thing-we-can-all-do-help-improve-quality-our-drinking-water.html>