About: http://webisa.webdatacommons.org/411780791

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	The ducting structure may be constructed of a rigid material, such as steel, composite materials, etc.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com