Assertion: american bison's head | /r/CapableOf | extract nutrient
Facets:
value: from fibrous vegetation
type: TRANSITIVE-OBJECT
Source sentences:
text: Bison are adapted for migratory grazing by having low-slung heads, muscular limbs and necks, digestive systems that are able to extract nutrients from fibrous vegetation, hard hooves for rapid travel and woolly coats for insulating against cold prairie nights.