About: http://webisa.webdatacommons.org/255026359

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	But intuitively, a tree is a graph that looks like a family tree, with a single node at the top connected to one or more nodes in the layer below, which are connected to nodes in the layer below them, and so on.
http://www.w3.org/ns/prov#wasQuotedFrom	drdobbs.com