Assertion: cow's layer | /r/CapableOf | serve as shield
Facets:
value: against arctic ice
type: TRANSITIVE-OBJECT
value: against rocks
type: TRANSITIVE-OBJECT
Source sentences:
text: Steller's sea cow had thick, insulating layer of fat (of 4 to 9 inches) designed to keep the body temperature stable in the cold waters and to serve as a shield against Arctic ice and rocks.