About: http://webisa.webdatacommons.org/163479844

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	One item was a collection of letters from Mark Twain to his mother, running
http://www.w3.org/ns/prov#wasQuotedFrom	marktwainproject.org