About: http://webisa.webdatacommons.org/150337611

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	Rare earth elements such as cerium are components of the strongest known magnets.
http://www.w3.org/ns/prov#wasQuotedFrom	phys.org