Assertion: caribou's hoof | /r/CapableOf | contribute to movement
Facets:
value: on hard snow
type: LOCATION
value: on ice
type: LOCATION
Source sentences:
text: In summer, the soft heel part of the hooves helps to move faster on wet and slippery snow in the tundra, and in winter, sharp edges grow around the hooves, which contributes to movement on hard snow and ice.