{
  "properties": {
    "problem_id": {
      "title": "Problem Id",
      "type": "string"
    },
    "source": {
      "default": "trivial",
      "title": "Source",
      "type": "string"
    },
    "split": {
      "default": "dev",
      "title": "Split",
      "type": "string"
    },
    "informal_statement": {
      "title": "Informal Statement",
      "type": "string"
    },
    "formal_statement": {
      "title": "Formal Statement",
      "type": "string"
    },
    "area": {
      "default": "",
      "title": "Area",
      "type": "string"
    },
    "difficulty": {
      "anyOf": [
        {
          "type": "integer"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "title": "Difficulty"
    },
    "imports": {
      "items": {
        "type": "string"
      },
      "title": "Imports",
      "type": "array"
    },
    "header": {
      "default": "",
      "title": "Header",
      "type": "string"
    }
  },
  "required": [
    "problem_id",
    "informal_statement",
    "formal_statement"
  ],
  "title": "Problem",
  "type": "object"
}