About: http://webisa.webdatacommons.org/24956437

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	Formerly occurred in Lake Nipigon and all of the Great Lakes except Lake Erie; now evidently extirpated in lakes Ontario and Nipigon and declining in lakes Superior and Huron.
http://www.w3.org/ns/prov#wasQuotedFrom	iucnredlist.org