¿Qué pasó antes de primeros de septiembre?

"Results": [
    {
        "Text": "antes de primeros de septiembre",
        "Start": 10,
        "End": 41,
        "TypeName": "datetimeV2.daterange",
        "Resolution": {
            "values": [
                {
                    "timex": "XXXX-09",
                    "Mod": "before-start",
                    "type": "daterange",
                    "end": "2018-09-01",
                    "sourceEntity": "datetimerange"
                },
                {
                    "timex": "XXXX-09",
                    "Mod": "before-start",
                    "type": "daterange",
                    "end": "2019-09-01",
                    "sourceEntity": "datetimerange"
                }
            ]
        }
    }
]