About: http://webisa.webdatacommons.org/399384694

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	If made principally of steel or other relatively non-resilient material, they may include a layer of rubber or other resilient material at either end to act as a bumper or cushion to soften impacts.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com