About: http://webisa.webdatacommons.org/141973796

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	Alternatively, the thickness of the protective layers 20 a and 20 b may be N times as large as ??/2n, where N is a positive integer.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com.au