Situation Theory Ontology by VIStology, Inc. Copyright 2006. Attribute types. Individual types. Types of classes in situation semantics framework. Rule types. Value types. Dimensionality types. Situation types. Relation types. Resource situations are those that exist and to which utterance situations refer. Aka described situation. This is the situation of interest at a given time. Utterance (goal, query, assertion). false F meter true T second meters per second