Assertion: bird | /r/HasAspect | wing
Facets:
value: with soft rounded feathers
type: OTHER
Source sentences:
text: Birds have wings whose development varies according to species; the only known groups without wings are the extinct moa and elephant birds.
text: Birds such as owls that hunt at night have wings with soft rounded feathers so that they do not flap loudly.
text: While all birds have wings, not all birds can use their wings to fly, like ostriches and penguins.