About: http://webisa.webdatacommons.org/449800283

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	where g is at least one compound selected from the group consisting of SiO2, Si3N4 and SiC, E2 is an oxide of at least one element selected from the group GL2, and x3 and z1 satisfy 10???x3<90, 0<z1???50, and 10<x3+z1???90.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com