BIB-508

[
  {
    "508": {
      "ind1": " ",
      "ind2": " ",
      "subfields": [
        {
          "a": "credits"
        }
      ]
    }
  },
  {
    "511": {
      "ind1": "0",
      "ind2": " ",
      "subfields": [
        {
          "a": "cast"
        }
      ]
    }
  }
]

{
  "mainEntity": {
    "instanceOf": {
      "@type": "Text",
      "hasNote": [
        {
          "@type": "marc:CreationProductionCreditsNote",
          "label": "credits"
        },
        {
          "@type": "marc:ParticipantOrPerformerNote",
          "label": "cast",
          "marc:displayConstantController": "marc:NoDisplayConstantGenerated"
        }
      ]
    }
  }
}