About: http://webisa.webdatacommons.org/58736157

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	For example, the head can include a hollow main body 14 and a face plate 16, which are formed separately and then joined together by suitable means, such as welding.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com