Please identify all the named entities mentioned in the input sentence provided below. Use only the categories: PER - person, ORG - organization, and LOC - location.
Remember, nationalities are neither locations nor organizations, and organizations can represent other groups of people.
Pay attention to the provided example. You should only output the results in JSON format, following a similar structure to the example result provided.

Example sentence and results:

“While much of the digital transition is unprecedented in the United States, the peaceful transition of power is not,” Obama special assistant Kori Schulman wrote in a blog post Monday.

"Results": [
    {
        "TypeName": "LOC",
        "Text": "United States",
        "Start": 62,
        "End": 75
    },
    {
        "TypeName": "ORG",
        "Text": "Obama",
        "Start": 119,
        "End": 124
    },
    {
        "TypeName": "PER",
        "Text": "Kori Schulman",
        "Start": 143,
        "End": 156
    }
]

Considering the input sentence below, what is the output result?

The Schlei and the wetlands between the Danevirke and Husum had frozen solid in a hard winter, and the territory immediately south of the Danevirke had been conquered by the advancing German army.


"Results": [
    {
        "TypeName": "LOC",
        "Text": "Schlei",
        "Start": 4,
        "End": 10
    },
    {
        "TypeName": "LOC",
        "Text": "Danevirke",
        "Start": 40,
        "End": 49
    },
    {
        "TypeName": "LOC",
        "Text": "Husum",
        "Start": 54,
        "End": 59
    },
    {
        "TypeName": "LOC",
        "Text": "Danevirke",
        "Start": 40,
        "End": 49
    }
]