Assertion: sea urchin's spine | /r/CapableOf | serve as protection
Facets:
value: from predators
type: TRANSITIVE-OBJECT
Source sentences:
text: The spines, which do not usually preserve as fossils, serve not only as protection but can also move to walk the animal across the ocean floor.
text: The spines serve multiple purposes including protection, feeding and making a home.
text: These spines serve as protection from predators and can be painful if they puncture the skin.