Assertion: sea urchin's spine | /r/CapableOf | trap food particles
Facets:
Source sentences:
text: The spines of the sea urchin are used for protection, to move about, and to trap food particles that are floating around in the water.
text: Sea urchins have a round shaped body with long spines that come off it which are used for: protection, to move about, and to trap food particles that are floating around in the water.