About: http://webisa.webdatacommons.org/421333945

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	Indeed, yield increases in today???s farm fields have generally leveled off and, in cases such as rice and wheat, yields are beginning to decline in some areas.
http://www.w3.org/ns/prov#wasQuotedFrom	blogcritics.org