Conference
type: Class
disjoint with: Invited Talk
disjoint with: Social Event
disjoint with: Workshop
comment: One edition of a conference
disjoint with: Track
disjoint with: Contributed Talk
disjoint with: Tutorial
disjoint with: Session
subclass of: Scientific Event

Accepted Paper
type: Class
disjoint with: Camera Ready Paper
subclass of: Evaluated Paper
disjoint with: Rejected Paper
comment: Accepted paper to become part of proceedings. Note that camera-ready paper is not considered as 'accepted paper', as it was accepted in a different form!