<http://schema.org/description>
"In order to produce a truly sweet onion, a number of factors must be considered.  The process begins with the selection of a variety that possesses suitable genetic characteristics.  Variety is the main factor in determining pungency in onion cultivars."^^<http://www.w3.org/2001/XMLSchema#string>
<http://extension.psu.edu/plants/vegetable-fruit/news/2010/factors-affecting-pungency-in-sweet-onions>