{
  "id": "cmtv74q4s000lql07nry7e4tw",
  "paper_id": "cmtv71eg30007ql07huk2owfr",
  "paper_name": "合成试卷",
  "question_id": "cmtv71eg30007ql07huk2owfr_q1",
  "question_no": "1",
  "question_text": "Calculate 12 + 8. (10 points)",
  "student_answer": "12 + 8 = 20",
  "score": 10,
  "max_score": 10,
  "status": "correct",
  "knowledge_points": [
    "整数加法运算"
  ],
  "error_tags": [],
  "evidence": [
    {
      "image_id": "cmtv73m3y0009ql075w6hkcj3",
      "bbox": {
        "x": 0.06,
        "y": 0.17,
        "width": 0.5,
        "height": 0.13
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    },
    {
      "image_id": "cmtv73m3y0009ql075w6hkcj3",
      "bbox": {
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        "width": 0.463,
        "height": 0.1502857142857143
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    }
  ],
  "confidence": 0.95,
  "needs_review": false,
  "scoring_basis": "teacher_mark",
  "version": 1
}