About: http://webisa.webdatacommons.org/183403356

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	Copper may also have a beneficial effect on some crops when present at levels somewhat higher than those meeting minimal plant requirements, for example, by enhancing resistance to disease or other stresses.
http://www.w3.org/ns/prov#wasQuotedFrom	usda.gov