Assertion: plesiosaur's flipper | /r/CapableOf | perform a power stroke
Facets:
value: to behind
type: MANNER
value: to below
type: OTHER
Source sentences:
text: The retracted front flippers of the lower animal could be performing a power stroke to below and behind, which works almost as well as stroke to the front and is in fact the usual method employed by turtles, or be positioning themselves for the upstroke, which would fit nicely the fact that a prey has just been caught.