About: http://webisa.webdatacommons.org/207130466

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	Tools made from bone and rock last a long time, so you can easily get a good idea of when people started making new types of tools.
http://www.w3.org/ns/prov#wasQuotedFrom	slashdot.org