About: http://webisa.webdatacommons.org/324489146

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 order to protect buried metal structures, such as pipelines, power cables, underground transformers, etc., it is a common practice to use cathodic protection systems.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es