About: http://webisa.webdatacommons.org/45516377

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	wherein the glass sheet is substantially free from coloring components other than iron oxide, cerium oxide and manganese oxide. 50.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com