About: http://webisa.webdatacommons.org/280742111

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	The inner core can be metal or semiconducting oxides such as silicon oxide, aluminum oxides, or metals such as copper, nickel or tin.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com