About: http://webisa.webdatacommons.org/148523059

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	Because these signs had to be easy to see from a distance, rules were created to make them stand out as clearly as possible, especially regarding colors.
http://www.w3.org/ns/prov#wasQuotedFrom	thewestologist.com