About: http://webisa.webdatacommons.org/415432902

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	For example, here is an email that a fellow economist sent to Greg Mankiw of Harvard:
http://www.w3.org/ns/prov#wasQuotedFrom	christianpost.com