About: http://webisa.webdatacommons.org/120714564

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	In the heating, ventilation, and air conditioning industry, ducts fabricated from various types of sheet metal materials are typically used to transport conditioned air throughout homes, factories, office buildings and other structures.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com