Hierarchy classification:

1. top of the aat hierarchies
2. Activities Facet
3. Events (hierarchy name)
4. events (activities)
5. cultural events
6. parties (events)
7. balls (parties)

Anotations

Scope note:

Balls at which those attending wear costumes departing from currently conventional style and usually representing fictional or historical characters, animals, particular occupations, or the fancy of the wearer.