About: http://webisa.webdatacommons.org/411592517

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 head 12x might, if desired, be of a heavy metal, such as iron or lead, and made of such length as to give it the desired or required weight for the most eiective use of the knocker.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com