Assertion: penguin's wing | /r/HasProperty | stiff
Facets:
value: very
type: DEGREE
Source sentences:
text: They also have stiff wings that resemble flat flippers.
text: Penguins have strong wings and strong pectoral muscles to power them.
text: Too Stiff to Fly, Macaroni Penguins Make Excellent Swimmers Macaroni Penguins are unable to fly because their wings are small and very stiff.
text: They can't fly because their wings are stiff and small.