About: http://webisa.webdatacommons.org/12542327

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	Elements, in turn, are pure substances???such as nickel, hydrogen, and helium???that make up all kinds of matter.
http://www.w3.org/ns/prov#wasQuotedFrom	ck12.org