Assertion: stingray's spiracle | /r/HasProperty | opening
Facets:
Source sentences:
text: Directly behind the eyes are spiracles, which are openings that allow for respiration.
text: Its spiracles (openings near the eyes) will rapidly move to eject water if it is feeding.
text: Instead, they have spiracles -- openings for gas exchange -- behind their eyes, and their gills are on their flat underside.