About: http://webisa.webdatacommons.org/403738379

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	To separate and recover the spacers 4, the spacers 4 are dipped in an acid solution such as a nitric acid solution, or heated.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com