About: http://webisa.webdatacommons.org/82204940

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	Soil Selenium levels vary widely from location to location, and are concentrated to toxic levels by some agricultural practices such as irrigation.
http://www.w3.org/ns/prov#wasQuotedFrom	usda.gov