{
  "kind": "original-fictional-teaching-example",
  "source": "At the practice library, members may borrow up to three books for fourteen days. A book may be renewed once, only if nobody has reserved it. Books must be returned to the service desk.",
  "prompt": "What are the borrowing, renewal and return rules?",
  "attempt": "Members can borrow up to three books for two weeks. They can renew once. Returns go in the drop box.",
  "key": [
    {
      "point": "Borrowing limit",
      "expected": "Up to three books",
      "attempt": "Up to three books",
      "status": "correct"
    },
    {
      "point": "Loan period",
      "expected": "Fourteen days",
      "attempt": "Two weeks",
      "status": "correct"
    },
    {
      "point": "Renewal limit",
      "expected": "Once",
      "attempt": "Once",
      "status": "correct"
    },
    {
      "point": "Renewal condition",
      "expected": "Only if nobody has reserved it",
      "attempt": null,
      "status": "missing"
    },
    {
      "point": "Return place",
      "expected": "Service desk",
      "attempt": "Drop box",
      "status": "incorrect"
    }
  ],
  "counts": {
    "correct": 3,
    "missing": 1,
    "incorrect": 1,
    "total": 5
  },
  "interpretation": "A marking-key count for this fictional example, not a real student score, experiment or learning outcome."
}