<http://schema.org/description>
"Sacramento River, the longest river in California. It begins in the mountains of northern California and flows southward some 380 miles (610 km) to Suisun Bay, an arm of San Francisco Bay."^^<http://www.w3.org/2001/XMLSchema#string>
<http://geography.howstuffworks.com/united-states/the-sacramento-river.htm>