Assertion: duck's bill | /r/HasProperty | open
Facets:
Source sentences:
text: The lamellae are not usually visible unless the duck's bill is open or there is some injury or deformity on the side of the bill that exposes the lamellae.
text: The lamellae are not usually visible unless the duck's bill is open or there is some injury or deformity on the side of the bill that exposes the lamellae.