About: http://webisa.webdatacommons.org/175602077

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	Spacers 38 and 40 are each comprised of any structural material such as aluminum, iron, or gold, for example, and are each approximately 50 microns thick.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com