About: http://webisa.webdatacommons.org/256444091

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	Many of the prior art mobiles that had a spring motor as the driving means included some sort of governor to regulate the speed of the mobile.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es