Assertion: swan's parent | /r/CapableOf | sit on egg
Facets:
value: without warming them
type: MANNER
value: to protect them
type: PURPOSE
Source sentences:
text: Until the full clutch of eggs is laid the parents sit on the eggs to protect them but do not incubate them by warming them.
text: Prior to the commencement of incubation the parent will sit over the eggs without actually warming them.
text: The parents take turns sitting on the egg to keep it warm.