About: http://webisa.webdatacommons.org/229896755

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 pilot types the challenge into some hand-held computer device, and reads back the reply.
http://www.w3.org/ns/prov#wasQuotedFrom	schneier.com