Assertion: stingray's sting | /r/ObjectUse | used for self-defense
Facets:
Source sentences:
text: Most stingrays have one or more barbed stings on the tail, which is used only for self-defense.
text: Most stingrays have one or more barbed stings on the tail, which is used only for self defending.
text: Most stingrays have one or more barbed stings on the tail, which is used only for self-defense.