About: http://webisa.webdatacommons.org/115875621

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	It may be caused by prices, farm programs, trade policies, technology, markets, consumer preferences, or other aspects.
http://www.w3.org/ns/prov#wasQuotedFrom	ncsu.edu