About: http://webisa.webdatacommons.org/10721554

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	Matrix materials may be synthetic or naturally occurring materials such as clays, silica and metal oxides.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com