Assertion: possum's molar | /r/HasProperty | formed of hard and soft material
Facets:
value: in crescentic folds
type: LOCATION
value: to be a powerful agent
type: PURPOSE
Source sentences:
text: They have forty teeth, the molars being formed of hard and soft material in crescentic folds, so as to be a powerful agent in grinding up hard grasses and other vegetable food.