[
  {
    "370": {
      "ind1": " ",
      "ind2": " ",
      "subfields": [
        {
          "c": "Sweden"
        },
        {
          "g": "Japan"
        }
      ]
    }
  }
]

JSON-LD

{
  "mainEntity": {
    "instanceOf": {
      "@type": "Text",
      "marc:hasAssociatedPlace": [
        {
          "@type": "Place",
          "label": "Sweden"
        }
      ],
      "originPlace": [
        {
          "@type": "Place",
          "label": "Japan"
        }
      ]
    }
  }
}