About: http://webisa.webdatacommons.org/207503166

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	To vary the compositions or types of particle or matrix materials, additional hoppers containing the desired materials can be used.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com.au