Assertion: stingray's spine | /r/HasProperty | hidden
Facets:
value: in the wound
type: LOCATION
value: essentially
type: DEGREE
value: from sight
type: LOCATION
Source sentences:
text: These spines are essentially hidden from sight when the stingray is unthreatened.
text: Sea urchins Use sterile tweezers to remove any spines that are visible in the wound.