About: http://webisa.webdatacommons.org/165155117

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	It was never observed because the flow of dirty air out of the tower occurs before the impact, i.e. from the story or stories immediately below the crushing front.
http://www.w3.org/ns/prov#wasQuotedFrom	bravenewclimate.com