About: http://webisa.webdatacommons.org/271294991

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	I ask because one can find many materials used including wood, glass, metals, slate, carbon fibre, composites etc, either on their own or in combinations with each other (constrained layer damping).
http://www.w3.org/ns/prov#wasQuotedFrom	acousticalsurfaces.com