About: http://webisa.webdatacommons.org/392972310

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	Before the use of fertilizers and other efficient farming methods, cultivated land around a settlement lost its fertility over time and eventually becomes unproductive unless it is allowed to lie fallow for a while.
http://www.w3.org/ns/prov#wasQuotedFrom	archaeologywordsmith.com