"derfor" meaning in Norwegian Bokmål

{
  "head_templates": [
    {
      "args": {
        "1": "nb",
        "2": "adverb"
      },
      "expansion": "derfor",
      "name": "head"
    }
  ],
  "lang": "Norwegian Bokmål",
  "lang_code": "nb",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Norwegian Bokmål entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 3 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "I think, therefore I am.",
          "text": "Jeg tenker, derfor er jeg.",
          "type": "example"
        },
        {
          "english": "It was raining, therefore he brought his umbrella.",
          "text": "Det regna, derfor tok han med seg paraplyen.",
          "type": "example"
        }
      ],
      "glosses": [
        "therefore"
      ],
      "id": "en-derfor-nb-adv-uuDbGCl0",
      "links": [
        [
          "therefore",
          "therefore"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈdærfɔr/"
    }
  ],
  "word": "derfor"
}

{
  "head_templates": [
    {
      "args": {
        "1": "nb",
        "2": "adverb"
      },
      "expansion": "derfor",
      "name": "head"
    }
  ],
  "lang": "Norwegian Bokmål",
  "lang_code": "nb",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        "Norwegian Bokmål adverbs",
        "Norwegian Bokmål entries with incorrect language header",
        "Norwegian Bokmål lemmas",
        "Norwegian Bokmål terms with usage examples",
        "Pages with 3 entries",
        "Pages with entries"
      ],
      "examples": [
        {
          "english": "I think, therefore I am.",
          "text": "Jeg tenker, derfor er jeg.",
          "type": "example"
        },
        {
          "english": "It was raining, therefore he brought his umbrella.",
          "text": "Det regna, derfor tok han med seg paraplyen.",
          "type": "example"
        }
      ],
      "glosses": [
        "therefore"
      ],
      "links": [
        [
          "therefore",
          "therefore"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈdærfɔr/"
    }
  ],
  "word": "derfor"
}