About: http://webisa.webdatacommons.org/300978084

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	Silver may be released into the air and water through natural processes such as the weathering of rocks.
http://www.w3.org/ns/prov#wasQuotedFrom	cdc.gov