About: http://webisa.webdatacommons.org/113278686

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	The upper surface of the niobium layer 51 is protected by a layer 52 of a suitable material such as silicon dioxide.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com