demo-process-models/playground/dan/gateways/is-rain-schema.json

{
  "title": "Check for Rain",
  "description": "Please answer this important question ...",
  "properties": {
    "raining": {
      "type": "boolean",
      "title": "Is it raining today?",
      "default": false,
      "oneOf": [
        {
        "title" : "Yes",
        "const" : true
        },
        {
          "title" : "No",
          "const" : false
        }
      ]
    }
  }
}