About: http://webisa.webdatacommons.org/321425330

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 has not yet been possible to distinguish between Umt and Umr by direct flight speed measurements, mainly because speeds vary quite a lot and depend also on other factors such as body mass (usually unknown) and winds.
http://www.w3.org/ns/prov#wasQuotedFrom	royalsocietypublishing.org