{
  "schema": {
    "text": {
      "type": "string",
      "title": "Text"
    },
    "category": {
      "type": "string",
      "title": "Category",
      "enum": [ "Geography", "Entertainment",
        "History", "Arts", "Science", "Sports" ]
    }
  },
  "form": [ {
    "type": "selectfieldset",
    "title": "Make a choice",
    "items": [ {
      "key": "text",
      "legend": "Search by text"
    }, {
      "key": "category",
      "legend": "Search by category"
    } ]
  }, {
    "type": "submit",
    "title": "Submit"
  } ]
}