About: http://webisa.webdatacommons.org/401500377

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 first ceiling fans were invented in the 1870s and 1880s for industrial spaces such as warehouses and factories.
http://www.w3.org/ns/prov#wasQuotedFrom	arcadianhome.com