Assertion: toucan's bill | /r/HasProperty | cumbersome
Facets:
Source sentences:
text: While a bill this big may seem cumbersome, it's actually quite light, made of hollow, reinforced bone sheathed in keratin, the same protein found in human hair and nails.
text: While the bill seems large and cumbersome, it is in fact a spongy, hollow bone covered in keratin, a very light and hard protein.
text: While the bill seems large and cumbersome, it is in fact a spongy, hollow bone covered in keratin, a very light and hard protein.