About: http://webisa.webdatacommons.org/391206392

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	Preferably, bottom layer 54 is a metal or metal alloy having a thickness of at least 50 ???, more preferably at least 100 ???, still more preferably at least 200 ???.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com