About: http://webisa.webdatacommons.org/80922166

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Some of the networks provide totally free services such as exams and limited (usually bitewing) xrays.
http://www.w3.org/ns/prov#wasQuotedFrom	allpricer.com