About: http://webisa.webdatacommons.org/231602128

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	It is contemplated that the spheres may be coated with other metals, such as silver, copper, or gold alloys.
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com