Assertion: hickory's wood | /r/DefinedAs | secondary xylem
Facets:
value: in the stems of trees
type: LOCATION
value: sometimes
type: TEMPORAL
Source sentences:
text: Wood is sometimes defined as only the secondary xylem in the stems of trees, or it is defined more broadly to include the same type of tissue elsewhere such as in the roots of trees or shrubs.[citation needed]