<http://schema.org/ratingValue>
"5"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.gpspower.net/garmin-maps/208841-city-navigator-north-america-nt-2012-10-a-4.html?s=d90c3a7b101cde0eff2e12670a728b41>