About: http://webisa.webdatacommons.org/183698530

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	Concrete is a composite material composed of various constituent materials: a binder, usually cement, aggregates, and water.
http://www.w3.org/ns/prov#wasQuotedFrom	nachi.org