About: http://webisa.webdatacommons.org/296287427

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	Somebody wrote a replacement tree controller that just automatically assumes that any object that does not respond to the children keypath is a leaf and provides an automatic children count of zero.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com