About: http://webisa.webdatacommons.org/324325221

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	Unfortunately, copper and copper alloys have a tendency to react with various agents present in the air such as oxygen, water vapor, carbon dioxide, chlorine and sulfur.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com