About: http://webisa.webdatacommons.org/437812070

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	It prevents the heat of the arc from reaching the gear and other exposed mechanism of the positive head.
http://www.w3.org/ns/prov#wasQuotedFrom	rfcafe.com