About: http://webisa.webdatacommons.org/93510579

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	Among the challenges to this field is the need for more stratified excavation of preceramic sites in Japan, noting that in most cases only two levels are available for study.
http://www.w3.org/ns/prov#wasQuotedFrom	publicanthropology.org