About: http://webisa.webdatacommons.org/132540859

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 structural rings may be expandable to conform to the cylinder and could be made from a variety of materials including metals and plastics.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es