NOTE
Removing subfields incompatible with 264.
addLink
resourceType
$a
about
_:part
addLink
resourceType
property
$0
$1
$2
$6
about
_:part
property
supplementary
true
Exempel: -
MARC
[
  {
    "257": {
      "ind1": " ",
      "ind2": " ",
      "subfields": [
        {
          "a": "Sweden"
        }
      ]
    }
  }
]
Normalized MARC:
[
  {
    "264": {
      "ind1": " ",
      "ind2": "0",
      "subfields": [
        {
          "a": "Sweden"
        }
      ]
    }
  }
]
JSON-LD
{
  "mainEntity": {
    "production": [
      {
        "@type": "Production",
        "place": [
          {
            "@type": "Place",
            "label": "Sweden"
          }
        ]
      }
    ]
  }
}