About: http://webisa.webdatacommons.org/408931010

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	These instruments are particularly useful during take off and approach to landing.
http://www.w3.org/ns/prov#wasQuotedFrom	aviationpros.com