Assertion: labrador retriever's tail | /r/CapableOf | serve as rudder
Facets:
value: for changing direction
type: PURPOSE
Source sentences:
text: Labrador Retriever has webbed feet which facilitate swimming, while otter-like tail serves as a rudder (used for steering through the water).
text: The tail acts as a rudder for changing directions.
text: The tail serves as rudder for changing direction.
text: The tail serves as rudder for changing direction.