About: http://webisa.webdatacommons.org/157122364

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	Al2 O3 :>1 SiO2 where M is a metal, other than a metal of Group IIIA, n is the valence of said metal, R is an alkyl ammonium radical, and x is a number greater than 0 but not exceeding 1.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com