json_schema: {
    "properties": {
      "person1": {
        "properties": {
          "date_of_birth": {
            "description": "The date of birth of the first person in yyyy-mm-dd format",
            "format": "date",
            "type": "string"
          },
          "name": {
            "description": "The name of the first person",
            "type": "string"
          }
        },
        "required": [
          "name",
          "date_of_birth"
        ],
        "type": "object"
      },
      "person2": {
        "properties": {
          "date_of_birth": {
            "description": "The date of birth of the second person in yyyy-mm-dd format",
            "format": "date",
            "type": "string"
          },
          "name": {
            "description": "The name of the second person",
            "type": "string"
          }
        },
        "required": [
          "name",
          "date_of_birth"
        ],
        "type": "object"
      }
    },
    "required": [
      "person1",
      "person2"
    ],
    "type": "object"
  }