<http://schema.org/about>
"Of course, the first question to ask yourself is: does my home really need a water filter? A water filter is only fruitful when it takes bad stuff out of the water without putting any bad stuff back in again. But think"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/green-food/five-best-in-home-water-filters.html>