Assertion: baby porcupine | /r/HasAspect | soft quills
Facets:
value: at birth
type: TEMPORAL
Source sentences:
text: Baby porcupines have soft quills at birth, which harden within a few days.
text: Baby porcupines have soft quills that begin hardening about an hour after birth.
text: Baby porcupines have soft quills at birth that harden in a few days.
text: These baby porcupines do not have pointed quills like the adults rather they have soft quills that harden with time.
text: Baby porcupine has soft quills and they, later on, become hard and sharp.