About: http://webisa.webdatacommons.org/344585017

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	He probably did not know the exact time of test flight because that depended on such unpredictable factors as weather conditions.
http://www.w3.org/ns/prov#wasQuotedFrom	andrewerickson.com