PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • My take on this, although I am not a lawyer, is that bicycles are restricted form having a siren or whistle, but can have any other device including a horn or bell.
http://www.w3.org/ns/prov#wasQuotedFrom
  • bikeportland.org