About: http://webisa.webdatacommons.org/219501173

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	Accordingly, ???the (pilot) surveys are like canaries in a mine, documenting increases in particular types of risk and allowing air travel professionals to take preventive steps before catastrophes happen.
http://www.w3.org/ns/prov#wasQuotedFrom	pntonline.com