About: http://webisa.webdatacommons.org/247299449

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	Typically, the protecting layer is formed of a material, such as silicon dioxide, that allows the material of the second spacer 209 to be selectively etched.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com