Assertion: starfish's spine | /r/ObjectUse | used for protection
Facets:
value: from predators
type: TRANSITIVE-OBJECT
Source sentences:
text: Made up of plates of calcium carbonate with tiny spines on their surface, a sea star's spines are used for protection from predators, which include birds, fish and sea otters.
text: ’s spines are used for protection from predators, which include birds, fish and sea otters.