About: http://webisa.webdatacommons.org/309574565

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 ambiguous sign of the Doppler frequency means impossibility in determining whether the target is approaching or receding.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com