Assertion: black walnut | /r/HasProperty | important
Facets:
value: commercially
type: MANNER
Source sentences:
text: Black walnut trees are important because their roots stabilize soil, their foliage provides food for insects and the birds that feed on insects; and their nuts provide food for squirrels, chipmunks and other rodents.
text: Black walnut is an important tree commercially, as the wood is a deep brown color and easily worked.