About: http://webisa.webdatacommons.org/255245894

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	kind_of? and is_a? are synonymous. instance_of? is different from the other two in that it only returns true if the object is an instance of that exact class, not a subclass.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com