About: http://webisa.webdatacommons.org/187800557

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	Also, for producing lightweight and insulating materials, a portion, of say up to about 25% of the sand/fly ash blend may be replaced with an insulating material such as expanded mica and the like.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com