{
  "@context": [
    {
      "comment": { "@id": "http://www.w3.org/2000/01/rdf-schema#comment", "@language": "en" }
    },
    {
      "comment": null,
      "comment_en": { "@id": "http://www.w3.org/2000/01/rdf-schema#comment", "@language": "en" }
    }
  ]
}
