About: http://webisa.webdatacommons.org/372212922

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	For instance, layer 19 is preferably formed of iron, nickel, cobalt, mixtures thereof, or other materials composed at least partially of these metals.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com