What are simple entities
Simple entities can be used to group various words together to remove the need to rewrite utterances that simply use another word. This is often the case for various nouns or names, such as with city names. The NLP trains itself around the concept of this simple entity so that it understands more than the predefined values.
Support for simple list entities varies per Natural Language Processing (NLP) engine. Currently, simple list entities are supported by Microsoft LUIS and Rasa.