Assertion: platypus's spur | /r/ObjectUse | used in defense
Facets:
value: against other males in contests
type: TEMPORAL
Source sentences:
text: Male platypuses possess a venomous spur on their ankle that can be used in defense ("Primal Perry").
text: The spur is used in defense and against other males in contests, and the poison is strong enough to be dangerous to humans — not that many of them come into contact with platypuses.