Assertion: rhea | /r/CapableOf | lack the keel bone
Facets:
Source sentences:
text: The rhea lacks the keel bone which is found in most birds, this is the bone which the flight muscles are usually attached to, but as these are flightless birds they lack it completely.
text: The rhea lacks the keel bone which is found in most birds, this is the bone which the flight muscles are usually attached to, but as these are flightless birds they lack it completely.