About: http://webisa.webdatacommons.org/295171878

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	Preferably, the expanded portion is spherical, as illustrated in the drawings, which helps to protect the fixture surface that may be constituted by wood or other material that can be damaged by sharp edges of the ends 36, 38, 40, 42.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com