Assertion: sponge's cavity | /r/CapableOf | become enlarged
Facets:
value: in the true land crabs
type: OTHER
Source sentences:
text: As a rule, crabs breathe by gills, which are lodged in a pair of cavities beneath the sides of the carapace, but in the true land crabs the cavities become enlarged and modified so as to act as lungs for breathing air.