Assertion: starfish's brain | /r/HasProperty | centralized
Facets:
Source sentences:
text: While a starfish lacks a centralized brain, it has a complex nervous system with a nerve ring around the mouth and a radial nerve running along the ambulacral region of each arm parallel to the radial canal.
text: Starfish lack distinct sense organs and centralized brains, but they have complex nervous systems and respond to light, temperature, touch and water conditions.