How can I use properly the Dynamic Entities parameter in /message endpoint?

[fredygamez]

In WIT documentation, there is an example of how to send a parameter entities in the GET /message endpoint https://wit.ai/docs/http/20210928/#get__message_link However, when I have tried to implement my own dynamic entites the response of the API is the same.

Here the generic example

$ curl -XGET 'https://api.wit.ai/message?v=20210928&q=how%20many%20people%20between%20Tuesday%20and%20Friday' \
    -H 'Authorization: Bearer $TOKEN'

API Response

{
    "color": [
      {
        "keyword": "purple",
        "synonyms": ["violet", "magenta"]
      },
     {
        "keyword": "blue",
        "synonyms": ["aqua blue", "marine blue"]
      }
    ]
}

How this feature could be used or what is the context to have a different response?