About: http://webisa.webdatacommons.org/392297039

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	Lettuce, spinach, and other leafy vegetables cannot be grown in certain soils high in cadmium concentrations because cadmium is readily taken up by these plants resulting in plants that exceed international standards.
http://www.w3.org/ns/prov#wasQuotedFrom	usda.gov