About: http://webisa.webdatacommons.org/426262624

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	They pointed out that one of the main reasons for the problem was the congested airspace over Europe which limits the possibilities for rerouting around problems such as an ash cloud.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com