About: http://webisa.webdatacommons.org/66255481

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 separation layer may be added with an element such as phosphorus or boron.
http://www.w3.org/ns/prov#wasQuotedFrom	google.de