About: http://webisa.webdatacommons.org/386523175

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	All of which goes to show why you can see so many aircraft at different holding altitudes as you are preparing to land at a busy airport such as Changi or Heathrow (below).
http://www.w3.org/ns/prov#wasQuotedFrom	wordpress.com