<http://schema.org/worstRating>
"1"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.gpspower.net/garmin-maps/198408-tracks4africa-maps-travellers-africa-pro-up-2013-05-version1-4.html?s=77363cd3c115bda723b17242a746199f>