<http://schema.org/about>
"We have discussed the danger of gender-bender chemical Bisphenol A from cans before; (see BPA Danger may be greater from Tin Cans than Water Bottles) Now the Globe and Mail and CTV have tested a range of canned foods and"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/green-food/bisphenol-a-is-in-your-tomato-sauce.html>