Assertion: box turtle's foot | /r/ObjectUse | used as rudder
Facets:
value: for steering
type: PURPOSE
Source sentences:
text: Sea turtles fly through the water, using the up-and-down motion of the front flippers to generate thrust; the back feet are not used for propulsion but may be used as rudders for steering.
text: Sea turtles fly through the water, using the up-and-down motion of the front flippers to generate thrust; the back feet are not used for propulsion, but may be used as rudders for steering.