About: http://webisa.webdatacommons.org/147016918

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 track may be composed of any suitable material, such as steel or aluminum, and the wheels are preferably composed of rubber, plastic, or other composition having suitable load-bearing characteristics.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es