About: http://webisa.webdatacommons.org/115639011

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	It is further desirable to constitute the cover of a thick, cushionable, yieldable material such as rubber to provide a measure of shock resistance for the head.
http://www.w3.org/ns/prov#wasQuotedFrom	google.de