Assertion: plesiosaur | /r/CapableOf | use flipper
Facets:
Source sentences:
text: " The plesiosaur, a prehistoric aquatic reptile, propelled itself through water using flippers.
text: The simulations show that using their four flippers, the plesiosaurs were able to utilize the most effective swimming motion - its front two flippers are flapped in an underwater flight motion like a penguin, while the rear flippers were most likely used for steering and stability.