Assertion: black walnut | /r/CapableOf | produce chemical
Facets:
value: in their roots
type: LOCATION
Source sentences:
text: Black walnut trees produce a chemical in their roots called Juglone, which is chemically known as C 10 H 6 O 3 or 5 hydroxy-1,
text: The black walnut tree produces a chemical called juglone, which occurs in all parts of the tree.
text: Black Walnut trees produce a chemical called juglone that inhibits many other plants from growing under them.