About: http://webisa.webdatacommons.org/109318052

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	In particular, heavy metals such as Cd, Co, Cr, Pb and V were not detected in the majority of plant tissues, and when detected they were at the lowest concentrations of any of the elements measured.
http://www.w3.org/ns/prov#wasQuotedFrom	usda.gov