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
    }
]