About: http://webisa.webdatacommons.org/132297756

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	The users - programmers - are aware of such things as 'parent_id' and 'node_id', of the need to identify a tree by both a table and a node_id.
http://www.w3.org/ns/prov#wasQuotedFrom	c2.com