Assertion: porcupine's quill | /r/HasAspect | sharp tips
Facets:
Source sentences:
text: Quills have sharp tips and overlapping scales or barbs that make them difficult to remove once they are stuck in another animal's skin.
text: Each quill has a sharp tip followed by a series of microscopic fish-hook-like barbs that work their way into an attacker’s flesh.
text: Quills have sharp tips and overlapping scales or barbs that make them difficult to remove once they are stuck in another animal’s skin.