<http://schema.org/about>
"With plenty of organic options, Starbucks can be the best bet in a train station or airport, and if you act quickly, you can get a half-priced gift card."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/food/healthy-eating/blogs/quick-get-a-half-price-starbucks-gift-card>