Assertion: sand dollar's predator | /r/HasProperty | bird
Facets:
Source sentences:
text: A sea star's spines are used for protection from predators, which include birds, fish, and sea otters.
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: A sea star’s spines are used for protection from predators, which include fish, sea otters and birds.