Assertion: rooted tree | /r/CapableOf | make all its edges point
Facets:
value: towards the root
type: LOCATION
Source sentences:
text: A rooted tree may be directed, called a directed rooted tree, either making all its edges point away from the root—in which case it is called an arborescence or out-tree—or making all its edges point towards the root—in which case it is called an anti-arborescence or in-tree.