About: http://webisa.webdatacommons.org/427305580

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	I think, as you have pointed out, it can aid usability in terms of 'spatial discovery' - i.e. making it slightly more obvious when a link can be clicked, especially if links have a large footprint that is not otherwise indicated.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com