About: http://webisa.webdatacommons.org/167539680

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	Well, here is an instance, not quoted by Butterworth but made known to me by David Frauenfelder, over at Breakfast with Pandora.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com