About: http://webisa.webdatacommons.org/426565598

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	Thoreau was a surveyor and he carefully surveyed Walden Pond, determining its length and breadth, its depth and underwater contours, dispelling the local myth of its being bottomless.
http://www.w3.org/ns/prov#wasQuotedFrom	factbites.com