About: http://webisa.webdatacommons.org/455730751

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	However, I often see them, or more correctly, an image of them from any seat, including the cockpit, when I am able to see the shadow of my planes and any trails on a cloud deck below!
http://www.w3.org/ns/prov#wasQuotedFrom	airliners.net