About: http://webisa.webdatacommons.org/366188183

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	Among other accomplishments, he proved that Sakhalin was an island and discovered the strait between Sakhalin and Hokkaido, Japan.
http://www.w3.org/ns/prov#wasQuotedFrom	loc.gov