About: http://webisa.webdatacommons.org/310350353

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	2.2 The number of levels which a hierarchy comprises is a measure of its depth, and the number of holons on any given level is called its "span (Herbert Simon).
http://www.w3.org/ns/prov#wasQuotedFrom	kheper.net