About: http://webisa.webdatacommons.org/58562570

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	So not worth subscribing to 50+ in my view at all.As for restricting via anything other than IP, I do not see how it can be done unless you force people to register.
http://www.w3.org/ns/prov#wasQuotedFrom	autosport.com