About: http://webisa.webdatacommons.org/117579423

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 ???more than 60 percent??? figure was for all of the Great Lakes, including Lake Erie, which at the time had more than 90 percent ice cover.
http://www.w3.org/ns/prov#wasQuotedFrom	nationalgeographic.com