Need deeper entity extraction information for list keys

[xtianus79]

Please provide us with the following information:

This issue is for a: (mark with an x)

- [ ] bug report -> please search issues before submitting
- [x ] feature request
- [ ] documentation issue or request
- [ ] regression (a behavior that used to work and stopped in a new release)

Minimal steps to reproduce

Run endpoint

Any log messages given by the failure

Expected/desired behavior

The output of the transaction as an example does not give the full entity information:
The different entities are within the category of AffirmENT but I can't resolve to them directly per the LIST. This is very different than LUIS.
A list key property would be ideal.

{
    "query": "no",
    "prediction": {
        "topIntent": "Affirmation_Prompt",
        "projectKind": "conversation",
        "intents": [
            {
                "category": "Affirmation_Prompt",
                "confidenceScore": 1
            }
        ],
        "entities": [
            {
                "category": "AffirmENT",
                "text": "no",
                "offset": 0,
                "length": 2,
                "confidenceScore": 1
            }
        ]
    }
}

OS and Version?

Windows 7, 8 or 10. Linux (which distribution). macOS (Yosemite? El Capitan? Sierra?)

Versions

Mention any other details that might be useful

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