Internationalisation with JSON-LD

{
  "@context":
  {
    ...
    "occupation": { "@id": "ex:occupation", "@container": "@language" }
  },
  "name": "Yagyū Muneyoshi",
  "occupation":
  {
    "ja": "忍者",
    "en": "Ninja",
    "cs": "Nindža"
  }
  ...
}

From RDF AND JSON-LD UseCases

See i18n (internationalisation).