About: http://webisa.webdatacommons.org/146394623

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	You do not say that this is new behavior, but I have to assume that this hasn't been going on for all these years (at least I hope not!) and that it is relatively new, especially since you use words like familiar and comfortable.
http://www.w3.org/ns/prov#wasQuotedFrom	boston.com