About: http://webisa.webdatacommons.org/222459249

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 it is because they are columns that are mainly used to scan for information or navigation.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com