Relation UNEXPECTED

Arity: 2
Domain: Situation
Range: Entity
Subrelation-Of: Typicality-relation
Axioms:
(=> (Unexpected ?A ?B)
    (Exists (?Z)
            (And (Situation ?A)
                 (Situation ?Z)
                 (Different ?A ?Z)
                 (Expected-For ?Z ?B))))