{
  "challenge": "CoboundaryExpanders",
  "comparator": {
    "theorem_names": [
      "OAI.CoboundaryExpanders.main"
    ],
    "definition_names": [],
    "permitted_axioms": [
      "propext",
      "Quot.sound",
      "Classical.choice"
    ]
  },
  "grade_timeout_sec": 12113
}