About: http://webisa.webdatacommons.org/339943453

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	Most are from an environmental source such as air, soil, and even permafrost; only about 3% are from patients.
http://www.w3.org/ns/prov#wasQuotedFrom	utica.edu