Ancestor of

The Ancestor Of keyword checks if a concept is the ancestor of another concept.

WIKI: https://en.wikipedia.org/wiki/Tree_(data_structure)#Terminology

This function is NOT SQL compatible. For more information about SQL compatibility, see our documentation.

Returns a Yes/No value that indicates if concept_a is an ancestor of concept_b.

concept_a ancestor of concept_b

'Europe' ancestor of 'Europe'.'the Netherlands'.'Amsterdam' => Yes.