Assertion: porcupine's quill | /r/HasProperty | mixed with underfur
Facets:
value: in new world porcupines
type: LOCATION
Source sentences:
text: Old World porcupines (Hystricidae) have quills in clusters, whereas in New World porcupines (Erethizontidae) single quills are mixed with bristles, underfur, and hair.