{
  "cells_in_reading_order": [
    "品目",
    "数量",
    "保管場所",
    "棚",
    "箱",
    "筆",
    "6",
    "A",
    "2",
    "紙",
    "12",
    "B",
    "3"
  ],
  "spans": [
    {
      "text": "品目",
      "rowspan": 2
    },
    {
      "text": "数量",
      "rowspan": 2
    },
    {
      "text": "保管場所",
      "colspan": 2
    }
  ],
  "scoring": "Exact cell text and explicit HTML rowspan/colspan separately; no layout credit from CER."
}