About: http://webisa.webdatacommons.org/38337883

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 very long series of letters from John to his father Charles Wilkes continues in 1850 until 1852 while John is on board the U.S.S. Marion on a cruise continuing to places such as Rio de Janeiro, China, and Manila Bay.
http://www.w3.org/ns/prov#wasQuotedFrom	duke.edu