About: http://webisa.webdatacommons.org/59124252

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 such as terbium simply aren???t found in any minable quantities in the United States, while other countries like China can produce them cheaply.
http://www.w3.org/ns/prov#wasQuotedFrom	aps.org