About: http://webisa.webdatacommons.org/33678624

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 Y is Si, Al, Ti, P; a is from about 1 to about 5; b is from about 1 to about 10; and X is a metal, such as alkaline or alkaline earth metals.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com