Ontology with a set of individual instances of classes constitute a knowledge base. Classes describe concepts in the domain. A class can have subclasses that represent concepts that are more specific than the superclass. Slots describe properties of classes and instances.A slot type defines how the bot will process the information available in the identified slot. Each slot must be mapped to a slot type. Slot type help the bot define the information that the bot should look for when trying to find a slot in the utterance.
