Assertion: plesiosaur | /r/HasAspect | tail
Facets:
value: for locomotion
type: PURPOSE
Source sentences:
text: The difference between the coelacanths and the plesiosaurs is that plesiosaurs didn’t have a tail for locomotion as well.
text: It had a long neck, four paddle-like flippers and a tail.
text: Plesiosaurs also had very long necks and tails.