About: http://webisa.webdatacommons.org/401981571

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	They protect water pipes and any connected system parts that carry water against malfunctions and corrosion damage caused by impurities such as rust particles, sand, and other extraneous substances.
http://www.w3.org/ns/prov#wasQuotedFrom	enmet.de