"Fab Four" meaning in English

{
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  "lang_code": "en",
  "pos": "name",
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        {
          "kind": "topical",
          "langcode": "en",
          "name": "Music",
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            "Art",
            "Sound",
            "Culture",
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      "examples": [
        {
          "ref": "1976 May 16, John Rockwell, “McCartney—The Beatle With the Charm Is Back”, in The New York Times, →ISSN:",
          "text": "First, Mr. McCartney was often blamed for breaking up the Fab Four, and it took a long time for people to forgive him.",
          "type": "quote"
        }
      ],
      "glosses": [
        "The Beatles."
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      "id": "en-Fab_Four-en-name-WiJMyGYc",
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        [
          "Beatles",
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      "raw_glosses": [
        "(informal, music) The Beatles."
      ],
      "tags": [
        "informal"
      ],
      "topics": [
        "entertainment",
        "lifestyle",
        "music"
      ]
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          "kind": "topical",
          "langcode": "en",
          "name": "UK politics",
          "orig": "en:UK politics",
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            "Society",
            "British Isles",
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            "Eurasia",
            "Fundamental",
            "Places",
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        {
          "ref": "2022 September 11, Caroline Davies, “William, Kate, Harry and Meghan put Firm above their differences”, in The Guardian:",
          "text": "Given the rumours of rancour and rift, the unexpected show of unity between the one-time “Fab Four” of William, Kate, Harry and Meghan has been a masterstroke in ensuring the focus over the coming days of national mourning remains firmly fixed on the late Queen Elizabeth II and the new King Charles III.",
          "type": "quote"
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      "glosses": [
        "William, Kate, Harry & Meghan"
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        "(informal, UK politics) William, Kate, Harry & Meghan"
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        "informal"
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      "topics": [
        "government",
        "politics"
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    "en:Groups of people"
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  "forms": [
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "categories": [
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        "English terms with quotations",
        "en:Music"
      ],
      "examples": [
        {
          "ref": "1976 May 16, John Rockwell, “McCartney—The Beatle With the Charm Is Back”, in The New York Times, →ISSN:",
          "text": "First, Mr. McCartney was often blamed for breaking up the Fab Four, and it took a long time for people to forgive him.",
          "type": "quote"
        }
      ],
      "glosses": [
        "The Beatles."
      ],
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          "music"
        ],
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      ],
      "raw_glosses": [
        "(informal, music) The Beatles."
      ],
      "tags": [
        "informal"
      ],
      "topics": [
        "entertainment",
        "lifestyle",
        "music"
      ]
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        "(informal, UK politics) William, Kate, Harry & Meghan"
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