Assertion: swan's cygnet | /r/HasProperty | 8 to 10 weeks old
Facets:
Source sentences:
text: By the time the cygnets are 8 to 10 weeks old, they will attain nearly half their adult size and by this time, they will be almost fully feathered.
text: By the time the cygnets are 8 to 10 weeks old, they will attain nearly half their adult size and by this time, they will be almost fully feathered.