About: http://webisa.webdatacommons.org/2925935

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	Oxygen, humidity, and other atmospheric elements react with the debris to form a minute mound of corrosion around it, and this is called a carbon spot.
http://www.w3.org/ns/prov#wasQuotedFrom	ncscoin.com