About: http://webisa.webdatacommons.org/21974854

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	When exposed to an environment such as the ocean or atmosphere, natural chemical reactions will begin to interact with the copper coating on the tubule wearing away minute quantities of pure copper or converting the copper to oxides.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es