{
  "name": "Preliminaries",
  "order": 1,
  "challenges": [
    {
      "id": "59a5801209a6acac5983b621",
      "title": "Sets and equivalence relations",
      "description": [
        ""
      ],
      "challengeSeed": [
        ""
      ],
      "tests": [
        ""
      ]
    }
  ]
}