Task: Formula-prediction-context (source dataset: enron-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:
|    | B                                                     | C   | D                                  | E      | F   | G   | H                            | I      | J         | K                   | L             | M                  | N   | O   | P   | Q   | R   | S   | T   | U   | V   |
|---:|:------------------------------------------------------|:----|:-----------------------------------|:-------|:----|:----|:-----------------------------|:-------|:----------|:--------------------|:--------------|:-------------------|:----|:----|:----|:----|:----|:----|:----|:----|:----|
|  1 | ECONOMIC CALCULATOR FOR FIRM VERSUS NON-FIRM PURCHASE |     |                                    |        |     |     |                              |        |           | 2001-07-29 00:00:00 |               |                    |     |     |     |     |     |     |     |     |     |
|  2 |                                                       |     |                                    |        |     |     | HE                           | 11.0   |           |                     |               |                    |     |     |     |     |     |     |     |     |     |
|  3 |                                                       |     | Enter Local Generation Avail:      | 611.0  |     |     | Projected Control Area Load: | 998.0  |           | Local Avail.        | 611.0         |                    |     |     |     |     |     |     |     |     |     |
|  4 |                                                       |     | Enter Remote Generation:           | 688.0  |     |     | PNM Contingent:              | 7.0    |           | Gen.                | 516.0         |                    |     |     |     |     |     |     |     |     |     |
|  5 |                                                       |     | Firm Purchases into EPE:           | 0.0    |     |     | TNP Firm:                    | 25.0   |           | UnLoaded            | [Target Cell] |                    |     |     |     |     |     |     |     |     |     |
|  6 |                                                       |     | Non-Firm Purchases into EPE:       | 0.0    |     |     | IID Firm + Contingent:       | 150.0  |           |                     |               |                    |     |     |     |     |     |     |     |     |     |
|  7 |                                                       |     | SPS Firm:                          | 103.0  |     |     | Firm Sales:                  | 128.0  | Eddy      | 133.0               | Local         | 611.0              |     |     |     |     |     |     |     |     |     |
|  8 |                                                       |     | Reserves:                          | 0.0    |     |     | Non-Firm Sales:              | 25.0   | -load     | 130.0               | -Copper       | 70.0               |     |     |     |     |     |     |     |     |     |
|  9 |                                                       |     | Total Generation for Load:         | 1402.0 |     |     | Total Load Next Hour:        | 1333.0 |           | 3.0                 |               | 541.0              |     |     |     |     |     |     |     |     |     |
| 10 |                                                       |     |                                    |        |     |     |                              |        |           |                     |               |                    |     |     |     |     |     |     |     |     |     |
| 11 |                                                       |     | Enter Total Spin Required:**       | 82.0   |     |     | PNM Contract:                | 7.0    |           |                     |               |                    |     |     |     |     |     |     |     |     |     |
| 12 |                                                       |     | Spin Required:                     | 41.0   |     |     | IID Firm Contract:           | 100.0  |           |                     |               | Enter Blue Numbers |     |     |     |     |     |     |     |     |     |
| 13 |                                                       |     | Non-Spin Required:                 | 41.0   |     |     | TNP Contract:                | 25.0   |           |                     |               |                    |     |     |     |     |     |     |     |     |     |
| 14 |                                                       |     | Spin Required + Regulating Margin: | 75.0   |     |     | SPS Contract:                | 100.0  |           |                     |               |                    |     |     |     |     |     |     |     |     |     |
| 15 |                                                       |     |                                    |        |     |     |                              |        | Lambda  = | 0.0                 |               |                    |     |     |     |     |     |     |     |     |     |



min_row: 1
max_row: 15
min_col: 2
max_col: 22
target_cell_row_idx: 5
target_cell_col_idx: 12
target_cell_value: 95.0
formula: =L3-L4