Assertion: stingray's tail | /r/MadeOf | venom
Facets:
value: usually
type: TEMPORAL
Source sentences:
text: Their flattened body ends with long tail that usually contains spine and venom.
text: Their flattened body ends with long tail that usually contains spine and venom.
text: However, the tail contains no venom so this species is not poisonous.
text: The tail of this stingray contains venom.