Assertion: rat's nest | /r/HasProperty | built by their mother
Facets:
value: for litters
type: TRANSITIVE-OBJECT
value: sometimes
type: TEMPORAL
Source sentences:
text: The pups stay in the nest built by their mother until they are weaned.
text: These nests are sometimes built by mothers for litters, but tend to be rather rare.
text: Until these rats reach their full adult size, they stay in the nest built by their mother.