{
  "type": "describe",
  "input": {
    "type": "values",
    "variables": [
      {
        "termType": "Variable",
        "value": "v"
      }
    ],
    "bindings": [
      {
        "v": {
          "termType": "NamedNode",
          "value": "http://example.org/a"
        }
      }
    ]
  },
  "terms": [
    {
      "termType": "Variable",
      "value": "v"
    }
  ]
}