Class OCCUPATION-OR-DISCIPLINE

Subclass-Of: Thing
Mapping: It should be split into OCCUPATION (a kind of ACTIVITY) and DISCIPLINE (a kind of topic). Anyway, there exists a type: OCCUPATIONAL-ACTIVITY, thus this is a kind of topic.
Usn-Documentation: A vocation, academic discipline, or field of study, or a subpart of an occupation or discipline. If the term refers to the individuals who have the vocation, the type 'Professional or Occupational Group' is assigned.
Axioms:
(Slot-Value-Type Occupation-Or-DisciplinePart-Of
                 Occupation-Or-Discipline)

(<=> (Occupation-Or-Discipline ?Self)
     (And (Thing ?Self) (Or (Occupation ?Self) (Discipline ?Self))))