About: http://webisa.webdatacommons.org/136555573

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	Late in his life, particularly after his wife and two of his daughters had died, Mark Twain became increasingly cynical and his humor darkened.
http://www.w3.org/ns/prov#wasQuotedFrom	mobileread.com