About: http://webisa.webdatacommons.org/410685033

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	As one moves farther and farther from an obsidian source, therefore, the amount of material decreases and the condition and kinds of tools change as they are replaced by more recently made tools from other sources.
http://www.w3.org/ns/prov#wasQuotedFrom	csus.edu