Assertion: goose's wing | /r/HasProperty | dark brown
Facets:
value: as their keels
type: LOCATION
value: their back
type: LOCATION
value: with belly
type: OTHER
Source sentences:
text: Their back, upper wings and flank are dark brown with a lighter brown (sometimes, nearly white) breast and belly.
text: Their wings and backs are the same dark brown as their keels.