About: http://webisa.webdatacommons.org/66747242

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	Occasionally made of other materials, including rubber.[28] May be solid or jointed and may have rollers or other attachments added, usually in the center.[29]
http://www.w3.org/ns/prov#wasQuotedFrom	wikipedia.org