"once upon a time" meaning in Английский

{
  "categories": [
    {
      "kind": "other",
      "name": "Английский язык",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Фразеологизмы/en",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "Английский",
  "lang_code": "en",
  "pos": "phrase",
  "senses": [
    {
      "examples": [
        {
          "author": "Марк Твен",
          "date": "1916",
          "ref": "М. Твен, «A Fable», 1916 г. [Викитека]",
          "source": "source",
          "text": "Once upon a time an artist who had painted a small and very beautiful picture placed it so that he could see it in the mirror.",
          "title": "A Fable"
        }
      ],
      "glosses": [
        "однажды, некогда, когда-то, как-то раз"
      ],
      "id": "ru-once_upon_a_time-en-phrase-OHCnKc7a"
    }
  ],
  "word": "once upon a time"
}

{
  "categories": [
    "Английский язык",
    "Фразеологизмы/en"
  ],
  "lang": "Английский",
  "lang_code": "en",
  "pos": "phrase",
  "senses": [
    {
      "examples": [
        {
          "author": "Марк Твен",
          "date": "1916",
          "ref": "М. Твен, «A Fable», 1916 г. [Викитека]",
          "source": "source",
          "text": "Once upon a time an artist who had painted a small and very beautiful picture placed it so that he could see it in the mirror.",
          "title": "A Fable"
        }
      ],
      "glosses": [
        "однажды, некогда, когда-то, как-то раз"
      ]
    }
  ],
  "word": "once upon a time"
}