About: http://webisa.webdatacommons.org/62006148

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	That means basing your sense of pricing not only on statistical data (which can be for a large area, such as a county, and thus possibly throw too wide a net) but also on recent transactions.
http://www.w3.org/ns/prov#wasQuotedFrom	time.com