About: http://webisa.webdatacommons.org/81932127

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	If the node has no children (it is a leaf node), simply set the NLEFT and NRIGHT values:SELECT @NCOUNT = COUNT(*), @NLEVEL2 = @NLEVEL + 1
http://www.w3.org/ns/prov#wasQuotedFrom	codeproject.com