Assertion: birch's wood | /r/HasProperty | durable
Facets:
value: in contact with the soil
type: OTHER
Source sentences:
text: Wood of hickory is dense, hard and durable.
text: The wood is dull orange brown, hard, and durable in contact with the soil; it was used in the past for posts and rails, small boats and ox-yokes, though scarcity and small size limits current use.