Assertion: porcupine's quill | /r/HasProperty | flexible
Facets:
value: at birth
type: TEMPORAL
Source sentences:
text: The quills of baby porcupines are soft and flexible at birth.
text: All baby porcupines (or porcupettes) are born with their quills, but the quills are too small and flexible to be very effective against predators until the porcupine is several months old.