<http://schema.org/description>
"Odds are that there is a Visa branded credit or debit card in your wallet or purse right now. Visa is far and away the worldwide leader in electronic payment processing, and beyond that, the brand"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.aol.com/article/2013/08/29/how-visa-makes-its-money/20707483/?gen=1>