"Golden Trio" meaning in English

{
  "etymology_text": "These characters are close friends, and are some of the most prominent characters in Harry Potter.",
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  "lang": "English",
  "lang_code": "en",
  "pos": "name",
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          "name": "English entries with incorrect language header",
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          "langcode": "en",
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          "orig": "en:Harry Potter",
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          "kind": "topical",
          "langcode": "en",
          "name": "Three",
          "orig": "en:Three",
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      ],
      "glosses": [
        "The trio of Harry Potter characters, Harry Potter, Ron Weasley, and Hermione Granger."
      ],
      "id": "en-Golden_Trio-en-name-JVpRjyUr",
      "links": [
        [
          "Harry Potter",
          "Harry Potter"
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      ],
      "wikipedia": [
        "Daniel Radcliffe",
        "Emma Watson",
        "Rupert Grint"
      ]
    }
  ],
  "word": "Golden Trio"
}

{
  "etymology_text": "These characters are close friends, and are some of the most prominent characters in Harry Potter.",
  "forms": [
    {
      "form": "the Golden Trio",
      "tags": [
        "canonical"
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  "lang": "English",
  "lang_code": "en",
  "pos": "name",
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        "en:Ships with idiosyncratic names (fandom)",
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      "glosses": [
        "The trio of Harry Potter characters, Harry Potter, Ron Weasley, and Hermione Granger."
      ],
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          "Harry Potter",
          "Harry Potter"
        ]
      ],
      "wikipedia": [
        "Daniel Radcliffe",
        "Emma Watson",
        "Rupert Grint"
      ]
    }
  ],
  "word": "Golden Trio"
}