About: http://webisa.webdatacommons.org/179758106

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	Also, by this invention toy trains or other vehicles that roll on the tracks made of sections in accordance with this invention can emit a clacking sound which can be quite reminiscent of actual moving railroad trains.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com