<http://schema.org/ratingValue>
"5"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.gpspower.net/garmin-maps/273869-city-navigator-north-america-nt-2013-20-a-3.html?s=da9b5494d9d3c50a8932fa49e348656c>