About: http://webisa.webdatacommons.org/397254978

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 mounting plate 23 is preferably circular to match the back end of the header 21, but can be any suitable shape, including rectangular.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com