About: http://webisa.webdatacommons.org/155454443

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	There were some alternatives, such as writing letters to the editor, or in the early days of the internet, posting at electronic bulletin boards (remember those?).
http://www.w3.org/ns/prov#wasQuotedFrom	scienceblogs.com