About: http://webisa.webdatacommons.org/198155161

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	Scientists believe that such stars are layered like onions: The heaviest elements, for example iron, are located in the core while the lighter ones make up the outermost layers.
http://www.w3.org/ns/prov#wasQuotedFrom	eurekalert.org