<http://schema.org/about>
"A new study finds that white children with higher levels of BPA in their bodies were 5 times more likely to be obese than children with lower levels."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/health/fitness-well-being/blogs/why-im-furious-about-the-bpa-obesity-study>