Assertion: tree's node | /r/MadeOf | the list of its children
Facets:
value: in general as a data structure
type: MANNER
Source sentences:
text: For example, looking at a tree as a whole, one can talk about "the parent node" of a given node, but in general as a data structure a given node only contains the list of its children, but does not contain a reference to its parent (if any).