Assertion: trumpeter swan | /r/CapableOf | use their strong webbed feet
Facets:
value: to dig into lake bottom
type: PURPOSE
value: to dig into the pond
type: PURPOSE
Source sentences:
text: Trumpeter swans use their strong webbed feet to dig into the pond or lake bottom for roots, shoots, and tubers, then plunge their heads and necks underwater to eat what they've dug up.