Assertion: red deer's antler | /r/HasProperty | soft
Facets:
value: during their development
type: TEMPORAL
Source sentences:
text: While they are developing, the antlers are soft and sensitive and care is taken to avoid damaging them so any disputes between stags while in velvet involve the use of the front legs while rearing in an upright position to avoid damage.
text: During their development, the antlers are soft and vulnerable to damage and covered in a grey-to-purple coloured membrane referred to as velvet.
text: An antler in velvet is soft, tender, easily injured, and will bleed if cut.