About: http://webisa.webdatacommons.org/17022471

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	In former times, research groups made their own cells, repeatedly distilling and purifying Rb or other elements before sealing them off.
http://www.w3.org/ns/prov#wasQuotedFrom	opticsinfobase.org