Assertion: crab's shell | /r/HasProperty | skeleton
Facets:
value: on the outside of its body
type: LOCATION
value: really
type: DEGREE
Source sentences:
text: ’s shell really is a skeleton on the outside of its body.
text: Because they have a hard outer shell (the exoskeleton) that does not grow, they must shed their shells, a process called molting.
text: Woodlouse has tough outer shell, called exoskeleton, on the surface of the body.