<http://schema.org/ratingValue>
"0"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.businessonline.it/news/41056/canone-rai-in-bolletta-2016-regole-finali-approvate-chi-quando-come-deve-pagare-e-come-fare-richiesta-esenzione.html>