About: http://webisa.webdatacommons.org/231114114

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	@BevQB ??? this article suggests that at least in 2007, there was an increase so maybe the decline you see is a blip.
http://www.w3.org/ns/prov#wasQuotedFrom	dearauthor.com