About: http://webisa.webdatacommons.org/451466316

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 the environment, it is usually combined with other elements such as oxygen,sodium, sulfur, or chloride.
http://www.w3.org/ns/prov#wasQuotedFrom	cdc.gov