About: http://webisa.webdatacommons.org/5711694

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	One element, selenium, is a necessary nutrient in some chemical forms and toxic in others.
http://www.w3.org/ns/prov#wasQuotedFrom	usda.gov