Assertion: vascular cambium | /r/CapableOf | add new secondary xylem
Facets:
value: inside the vascular cambium
type: LOCATION
value: continually
type: TEMPORAL
Source sentences:
text: The vascular cambium continually adds new secondary xylem to the outside of the existing xylem (just inside the vascular cambium), so the xylem area grows thicker and thicker.