Assertion: porcupine's barb | /r/CapableOf | act to pull the quill
Facets:
value: into the tissues
type: TRANSITIVE-OBJECT
Source sentences:
text: If a quill becomes put in the tissues of an attacker, the barbs act to pull the quill farther into the tissues with the normal muscle movements of the attacker, moving up to many millimeters in a day.