Assertion: crustacean's exoskeleton | /r/HasProperty | segmented body
Facets:
Source sentences:
text: Crustaceans are invertebrates with a hard exoskeleton (carapace), a segmented body that is bilaterally symmetrical, more than four pairs of jointed appendages ("legs") and an open circulatory system (the "blood" does not flow in a closed loop).