Assertion: crustacean's abdomen | /r/HasProperty | soft
Facets:
Source sentences:
text: Most species of hermit crab have long, spirally curved abdomens, which are soft, unlike the hard, calcified abdomens seen in related crustaceans.
text: Where hermit crabs differ is that they have long, sometimes twisted, abdomens that are soft and can fit into a discarded shell.