About: http://webisa.webdatacommons.org/98427434

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	The modifier/network former glasses employed in this invention may have the general formula (M2 O).X(An Dm), where M is an alkali metal, A is boron, aluminum, silicon, or phosphorous, D is oxygen or sulfur.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca