About: http://webisa.webdatacommons.org/395779286

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	When the arcing frequency or the decrease of the deposition rate is especially remarkable, it is common to open the apparatus to the atmospheric air and to mechanically scrape off the nodules.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com