About: http://webisa.webdatacommons.org/182818579

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	Making the targets reflective, such as the target suggested in U.S. Pat. No. 4,592,554 to Gilbertson, would not be practical because of the relative lack of light at night to reflect off the targets.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com