Assertion: duck | /r/CapableOf | help to waterproof their outer layer
Facets:
Source sentences:
text: Preening is the process by which ducks groom themselves—getting rid of dust, dirt, and parasites from their feathers, while also helping to waterproof their outer layer.
text: Preening is the process by which ducks groom themselves—getting rid of dust, dirt, and parasites from their feathers, while also helping to waterproof their outer layer.