About: http://webisa.webdatacommons.org/198425428

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	aM2/nO:Al2O3 :xSiO2 where M is a cation of valence ???n???, ???a??? has a value of about 0.90???0.2 and ???x??? has a value of at least 11.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com