About: http://webisa.webdatacommons.org/453795206

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	In 1841, a U.S. expedition mapped part of the Antarctic coast, proving that Antarctica was a continent.
http://www.w3.org/ns/prov#wasQuotedFrom	nsf.gov