About: http://webisa.webdatacommons.org/128801608

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	We often encounter plastic, wood, leather and other basic materials in our homes, but we encounter concrete as a ???hidden??? material which is covered by layers of plaster and paint.
http://www.w3.org/ns/prov#wasQuotedFrom	audiophilia.com