Assertion: whistling duck | /r/RelatedTo | swan
Facets:
value: more closely
type: DEGREE
value: than to true ducks
type: OTHER
Source sentences:
text: The whistling ducks (Dendrocygna), also called tree ducks, are not true ducks but are more closely related to geese and swans.
text: All whistling ducks – of which there are 8 species – are more closely related to geese and swans than to true ducks.