Assertion: sponge's skeleton | /r/HasProperty | rigid
Facets:
value: fairly
type: DEGREE
value: in zoology
type: LOCATION
value: irrespective of
type: OTHER
Source sentences:
text: Each sponge in the order Hexactinosa has a rigid skeleton that persists after the death of the animal.
text: In zoology a skeleton is any fairly rigid structure of an animal, irrespective of whether it has joints and irrespective of whether it is biomineralized.