<http://schema.org/about>
"It's a proposition some might find hard to swallow: a 20-percent tax on unhealthy food to improve the health of the nation."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/food/healthy-eating/stories/20-percent-fat-tax-needed-to-fight-obesity-health-experts-say>