<http://schema.org/ratingValue>
"5"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.gpspower.net/smartphones-marine-applications/331649-boating-normal-hd-up-v7-0-2-all-charts-features-5.html?s=fae9f644894fb377b2d8198a346b59a9>