About: http://webisa.webdatacommons.org/357544495

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	Good point, I added a section to my answer about keyword URLs and spam, especially related to Google's Panda algorithm.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com