About: http://webisa.webdatacommons.org/208712003

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 sign may be of metal such as steel or steel alloy or aluminum and the perimeter may be provided with a mirror-like polish to serve to reflect light from headlights onto the sign.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com