<http://schema.org/about>
"For the paltry sum of $25 per day (or less), frugal travelers can get around these eight countries, and even enjoy a few extra comforts as well."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/lifestyle/eco-tourism/photos/where-can-you-travel-on-25-a-day/vietnam>