Assertion: hermit crab's gill | /r/CapableOf | extract oxygen
Facets:
value: from the air
type: TRANSITIVE-OBJECT
Source sentences:
text: extracting oxygen from the air rather than from the water, the gills of Coenobita are reduced in number and stiffened, and the inner walls of the gill chamber are vascularized to promote the exchange of gases.
text: The water passes over the gills, which extract the oxygen.