About: http://webisa.webdatacommons.org/30833666

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	However, several studies indicate substantial decreases in agricultural production beginning in the third year, depending on soil and water conditions, spacing and location of trees and other factors.
http://www.w3.org/ns/prov#wasQuotedFrom	fao.org