Assertion: black walnut | /r/HasProperty | problem
Facets:
value: for landscape gardeners
type: TRANSITIVE-OBJECT
Source sentences:
text: Black walnut and butternut trees are a problem for landscape gardeners as sensitive plants will not thrive under the canopy of a walnut tree.
text: Black walnuts that fall on driveways, pathways and near door entrances can be a problem.