About: http://webisa.webdatacommons.org/147000563

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	The models do a reasonable job back to 1500AD in noting the amount of variability over a long period such as 50 years or more, which is the margin of error on most proxies which tend to be very imprecise.
http://www.w3.org/ns/prov#wasQuotedFrom	wattsupwiththat.com