{
  "title": "Beethoven · Piano Sonata No. 2, Op. 2 No. 2 · II. Largo appassionato",
  "run_date": "2026-11-07",
  "input": "MusicXML converted from Craig Sapp Humdrum sonata02-2.krn",
  "input_sha256": "37496f7fe12ec6627101cb4ad336ca64dff014313d7b4b9981e84dba3f408415",
  "reference": "Taking Form top-level sections, manually aligned in the existing Xunpu benchmark",
  "measure_count": 80,
  "predicted_section_ranges": [
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    [
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      31
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    [
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      45
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    [
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      67
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    [
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  "reference_section_ranges": [
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      8
    ],
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      12
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    [
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      19
    ],
    [
      20,
      31
    ],
    [
      32,
      39
    ],
    [
      40,
      43
    ],
    [
      44,
      49
    ],
    [
      50,
      57
    ],
    [
      58,
      67
    ],
    [
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      74
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    [
      75,
      80
    ]
  ],
  "predicted_ends": [
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    31,
    45,
    67
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  "reference_ends": [
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    12,
    19,
    31,
    39,
    43,
    49,
    57,
    67,
    74
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  "exact_matches": [
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    67
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  "prediction_only": [
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    45
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  "reference_only": [
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    12,
    19,
    39,
    43,
    49,
    57,
    74
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  "f1_exact": 0.2857,
  "f1_tolerance_1_measure": 0.2857,
  "f1_tolerance_2_measures": 0.5714,
  "reference_lookup": "disabled",
  "network_attempts": 0,
  "score_unchanged": true,
  "scope": "One 80-measure movement; symbolic offline engine. Boundary positions only, no PDF/OMR, key, section labels, or full-form classification scored."
}