About: http://webisa.webdatacommons.org/343517151

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	In the four-layer disk 100, since the fourth reflective layer 9 is formed of an alloy mainly composed of aluminum, the reflectivity is about 82 percent.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com