"DDR:n" meaning in Finnish

{
  "head_templates": [
    {
      "args": {
        "1": "fi",
        "2": "proper noun form"
      },
      "expansion": "DDR:n",
      "name": "head"
    }
  ],
  "lang": "Finnish",
  "lang_code": "fi",
  "pos": "name",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Finnish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "word": "DDR"
        }
      ],
      "glosses": [
        "genitive singular of DDR"
      ],
      "id": "en-DDR:n-fi-name-XacjmXxu",
      "links": [
        [
          "DDR",
          "DDR#Finnish"
        ]
      ],
      "tags": [
        "form-of",
        "genitive",
        "singular"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈdeːˌdeːˌærːæn/"
    },
    {
      "ipa": "[ˈde̞ːˌde̞ːˌærːæn]"
    },
    {
      "rhymes": "-ærːæn"
    }
  ],
  "word": "DDR:n"
}

{
  "head_templates": [
    {
      "args": {
        "1": "fi",
        "2": "proper noun form"
      },
      "expansion": "DDR:n",
      "name": "head"
    }
  ],
  "lang": "Finnish",
  "lang_code": "fi",
  "pos": "name",
  "senses": [
    {
      "categories": [
        "Finnish 4-syllable words",
        "Finnish entries with incorrect language header",
        "Finnish non-lemma forms",
        "Finnish proper noun forms",
        "Finnish terms spelled with :",
        "Finnish terms with IPA pronunciation",
        "Pages with 1 entry",
        "Pages with entries",
        "Rhymes:Finnish/ærːæn",
        "Rhymes:Finnish/ærːæn/4 syllables",
        "fi-pronunciation missing automatic hyphenation"
      ],
      "form_of": [
        {
          "word": "DDR"
        }
      ],
      "glosses": [
        "genitive singular of DDR"
      ],
      "links": [
        [
          "DDR",
          "DDR#Finnish"
        ]
      ],
      "tags": [
        "form-of",
        "genitive",
        "singular"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈdeːˌdeːˌærːæn/"
    },
    {
      "ipa": "[ˈde̞ːˌde̞ːˌærːæn]"
    },
    {
      "rhymes": "-ærːæn"
    }
  ],
  "word": "DDR:n"
}