Assertion: octopus's system | /r/HasProperty | nervous
Facets:
Source sentences:
text: Their nervous system is highly complex.
text: Are Part of Their Nervous System
text: These octopuses are used in biomedical research, particularly when relating the nervous system to behavior, because of their similar behavior to vertebrates.
text: Octopuses use one central brain to control their nervous systems and a small brain in each arm to control movement.