About: http://webisa.webdatacommons.org/110911484

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	They can be based on chemical elements, such as silicon, germanium, carbon, hydrogen or mixtures thereof.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com