About: http://webisa.webdatacommons.org/422035834

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 addition to the above cationic components, the optical glass I may contain, as cationic components, Ti, Zr, Zn or lanthanoids such as La, Gd, etc., in such amount ranges that do not impair the predetermined properties.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com