Task: Formula-prediction-context (source dataset: pge-random)

You are given an table region extracted from a real Excel spreadsheet, which is centered around a cell called "Target Cell" (labeled as "[Target Cell]" shown in the table below). The table region below includes up to 10 rows above/below the Target Cell, and 10 columns to the left/right of the Target Cell. 

Your task is to analyze the table context surrounding the Target Cell, and predict the most likely Excel formula that should go in the Target Cell. If multiple formulas are possible, choose the most reasonable or commonly used based on context.

1. Please follow the standard formula syntax in Excel, e.g. always begins with an equal sign (=).
2. Base your predicted formula on the surrounding table context, e.g., column headers, annotations, and data values in nearby cells.
3. No explanation — just output the formula itself in a JSON format: {"formula": "your_formula_here"}.

Input Excel Snippet in Markdown format:
|    | A    | B   | C                                                  | D   | E                   | F                                | G                          | H             | I   |
|---:|:-----|:----|:---------------------------------------------------|:----|:--------------------|:---------------------------------|:---------------------------|:--------------|:----|
|  3 |      |     |                                                    |     |                     |                                  |                            |               |     |
|  4 |      |     | 1) Rate Base                                       |     |                     |                                  |                            |               |     |
|  5 | Line |     | Description                                        |     | Values              | Source                           | Notes                      | Line          |     |
|  6 |      |     | Plant                                              |     |                     |                                  |                            |               |     |
|  7 | 100  |     | Transmission Plant                                 |     | 13772414947.125883  | 7-PlantInService, L. 112, col 13 | End of Year Value          | 100           |     |
|  8 | 101  |     | Common + General + Intangible Plant                |     | 1293706114.8576508  | 7-PlantInService, L. 701, col 1  | End of Year Value          | 101           |     |
|  9 | 102  |     | Abandoned Plant                                    |     | -4349368.447513444  | 8-AbandonedPlant, L. 102, col 11 | End of Year Value          | 102           |     |
| 10 | 103  |     | Total Plant                                        |     | 15061771693.53602   | Sum of Lines 100 to 102          |                            | 103           |     |
| 11 |      |     |                                                    |     |                     |                                  |                            |               |     |
| 12 |      |     | Working Capital                                    |     |                     |                                  |                            |               |     |
| 13 | 104  |     | Materials and Supplies                             |     | 81295878.69346379   | 13-WorkCap, L. 112, col 2        | End of Year Value          | [Target Cell] |     |
| 14 | 105  |     | Prepayments                                        |     | 75973874            | 13-WorkCap, L. 217, col 5        | End of Year Value          | 105           |     |
| 15 | 106  |     | Cash Working Capital                               |     | 89694358.23554802   | (Line 500 + Line 501) / 10       |                            | 106           |     |
| 16 | 107  |     | Total Working Capital                              |     | 246964110.92901182  | Sum of Lines 104 to 106          |                            | 107           |     |
| 17 |      |     |                                                    |     |                     |                                  |                            |               |     |
| 18 |      |     | Accumulated Depreciation Reserve                   |     |                     |                                  |                            |               |     |
| 19 | 108  |     | Transmission Depreciation Reserve                  |     | -3255525836.0878525 | 10-AccDep, L. 112, col 13        | Negative End of Year Value | 108           |     |
| 20 | 109  |     | Common + General + Intangible Depreciation Reserve |     | -441004471.15647584 | 10-AccDep, L. 701, col 1         | Negative End of Year Value | 109           |     |
| 21 | 110  |     | Total Accumulated Depreciation Reserve             |     | -3696530307.2443285 | Line 108 + Line 109              |                            | 110           |     |
| 22 |      |     |                                                    |     |                     |                                  |                            |               |     |
| 23 | 111  | a   | Accumulated Deferred Income Taxes                  |     | -1467672293.6072962 | 14-ADIT, L. 104, col 2           | End of Year Value          | 111           | a   |



min_row: 3
max_row: 23
min_col: 1
max_col: 9
target_cell_row_idx: 13
target_cell_col_idx: 8
target_cell_value: 104
formula: =A13