{
  "type": "object",
  "properties": {
    "@type": { "type": "string", "enum": ["Topic"], "default": "Topic" },
    "application": {
      "type": "object",
      "properties": {
        "@id": { "type": "string", "minLength": 1 },
        "@type": { "type": "string", "enum": ["Application"], "default": "Application" }
      }
      "required": ["@id"]
    },
    "category": {
      "type": "object",
      "properties": {
        "@id": { "type": "string", "minLength": 1 },
        "@type": { "type": "string", "enum": ["Category"], "default": "Category" }
      },
      "required": ["@id"]
    },
    "name": { "type": "string", "minLength": 1 }
  },
  "required": ["application", "category", "name"]
}