About: http://webisa.webdatacommons.org/197747174

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	Light and heavy rare earths are differentiated according to their atomic weight, with heavy rare earths, such as Terbium, Thulium and Ytterbium, beng more valuable.
http://www.w3.org/ns/prov#wasQuotedFrom	seekingalpha.com