Assertion: porcupine's quill | /r/HasProperty | detectable
Facets:
value: in the snake's gut
type: LOCATION
value: easily
type: MANNER
Source sentences:
text: In the 2003 study, entitled "Prickly food: snakes preying upon porcupines," researchers found that when a snake eats a porcupine, the animal's quills are left undigested and are easily detectable in the snake's gut.