About: http://webisa.webdatacommons.org/1853381

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	Duct: A passageway made of sheet metal or other suitable material used for conveying air or other gas at relatively low pressures.
http://www.w3.org/ns/prov#wasQuotedFrom	ne.gov