<http://schema.org/description>
"Having traveled a grand total of 25 miles (40 km) over the course of its historic mission of exploration, NASA's Opportunity Mars rover has taken the record for the greatest distance traveled on another planetary body."^^<http://www.w3.org/2001/XMLSchema#string>
<http://newatlas.com/nasa-mars-opportunity-rover-off-world-driving-record/33204/>