<http://schema.org/about>
"Preserving food is a hobby now, but during war times, it was a critical part of feeding America. "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/slideshows/green-food/can-all-you-can-13-great-posters-when-preserving-was-matter-life-and-death/page/4/>