{
  "synthetic": true,
  "pdf_page": 1,
  "reading_order": [
    "H",
    "L1",
    "L2",
    "R1",
    "R2",
    "T"
  ],
  "source_note": "按附件视觉布局人工指定；不是所有双栏PDF的通用规则"
}