有人能为Alexa Skill的交互模型解释这种行为吗?

{
    "interactionModel": {
        "languageModel": {
            "invocationName": "greeter",
            "intents": [
                {
                    "name": "HelloWorldIntent",
                    "slots": [
                        {
                            "name": "phrase",
                            "type": "phrase"
                        }
                    ],
                    "samples": [
                        "{phrase}"
                    ]
                }
            ],
            "types": [
                {
                    "name": "phrase",
                    "values": [
                        {
                            "name": {
                                "value": "HelloWorldIntent asdf {phrase}"
                            }
                        }
                    ]
                }
            ]
        }
    }
}

注意短语slot type的值。当我这样设置它时,无论我对alexa说什么,整个原始查询都被填充到请求对象的短语槽的值字段中。

“Launch greeter”==>LaunchIntent(显而易见)

“无论我说什么都会触发Hello world意向”==>

"intent": {
        "name": "HelloWorldIntent",
        "confirmationStatus": "NONE",
        "slots": {
            "phrase": {
                "name": "phrase",
                "value": "no matter what I say it triggers hello world intent",
                "resolutions": {
                    "resolutionsPerAuthority": [
                        {
                            "authority": "amzn1.er-authority.echo-sdk.amzn1.ask.skill.6c1d0991-f895-45fa-ba37-6880d3cc95f1.phrase",
                            "status": {
                                "code": "ER_SUCCESS_NO_MATCH"
                            }
                        }
                    ]
                },
                "confirmationStatus": "NONE"
            }
        }
    }

我无法理解这个交互模型是如何在短语槽的“值”字段中为我提供原始查询的。