About: http://webisa.webdatacommons.org/317826058

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	Electrodes 20, 21, 22 and 23 are preferably formed of platinum, although other metals and metal alloys may be employed such as stainless steel or gold.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com