Task: Formula-prediction-context (source dataset: cisco-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                                           | J                                           |
|---:|:-------------------------------------------------------------------|:-----|:--------------|:---------------------------------------------|:----------------------------------------------|:--------------------------------------------------------------|:--------------------------------------------|:--------------------------------------------|:--------------------------------------------|:--------------------------------------------|
| 41 | sh spanning-tree vlan 41 detail | in Number                        |      |               |                                              |                                               |                                                               |                                             |                                             |                                             |                                             |
| 42 | sh spanning-tree vlan 42 detail | in Number                        |      |               |                                              |                                               |                                                               |                                             |                                             |                                             |                                             |
| 43 | sh spanning-tree vlan 43 detail | in Number                        |      |               |                                              |                                               |                                                               |                                             |                                             |                                             |                                             |
| 44 | sh spanning-tree vlan 44 detail | in Number                        |      |               |                                              |                                               |                                                               |                                             |                                             |                                             |                                             |
| 45 | sh spanning-tree vlan 45 detail | in Number                        |      |               |                                              |                                               |                                                               |                                             |                                             |                                             |                                             |
| 46 | sh spanning-tree vlan 46 detail | in Number                        |      |               |                                              |                                               |                                                               |                                             |                                             |                                             |                                             |
| 47 | sh spanning-tree vlan 47 detail | in Number                        |      |               |                                              |                                               |                                                               |                                             |                                             |                                             |                                             |
| 48 | sh spanning-tree vlan 48 detail | in Number                        |      |               |                                              |                                               |                                                               |                                             |                                             |                                             |                                             |
| 49 | sh spanning-tree vlan 49 detail | in Number                        |      |               |                                              |                                               |                                                               |                                             |                                             |                                             |                                             |
| 50 | sh spanning-tree vlan 50 detail | in Number                        |      |               |                                              |                                               |                                                               |                                             |                                             |                                             |                                             |
| 51 | Number of topology changes 945048 last change occurred 0:00:26 ago | True | [Target Cell] | Number of transitions to forwarding state: 1 | Number of transitions to forwarding state: 14 | cps01cr01-private# sh spanning-tree vlan 2 detail | in Number | sh spanning-tree vlan 51 detail | in Number | sh spanning-tree vlan 52 detail | in Number | sh spanning-tree vlan 53 detail | in Number | sh spanning-tree vlan 54 detail | in Number |
| 52 | Number of transitions to forwarding state: 1                       |      |               |                                              |                                               |                                                               |                                             |                                             |                                             |                                             |
| 53 | Number of transitions to forwarding state: 14                      |      |               |                                              |                                               |                                                               |                                             |                                             |                                             |                                             |
| 54 | cps01cr01-private# sh spanning-tree vlan 2 detail | in Number      |      |               |                                              |                                               |                                                               |                                             |                                             |                                             |                                             |
| 55 | sh spanning-tree vlan 51 detail | in Number                        |      |               |                                              |                                               |                                                               |                                             |                                             |                                             |                                             |
| 56 | sh spanning-tree vlan 52 detail | in Number                        |      |               |                                              |                                               |                                                               |                                             |                                             |                                             |                                             |
| 57 | sh spanning-tree vlan 53 detail | in Number                        |      |               |                                              |                                               |                                                               |                                             |                                             |                                             |                                             |
| 58 | sh spanning-tree vlan 54 detail | in Number                        |      |               |                                              |                                               |                                                               |                                             |                                             |                                             |                                             |
| 59 | sh spanning-tree vlan 55 detail | in Number                        |      |               |                                              |                                               |                                                               |                                             |                                             |                                             |                                             |
| 60 | sh spanning-tree vlan 56 detail | in Number                        |      |               |                                              |                                               |                                                               |                                             |                                             |                                             |                                             |
| 61 | sh spanning-tree vlan 57 detail | in Number                        |      |               |                                              |                                               |                                                               |                                             |                                             |                                             |                                             |



min_row: 41
max_row: 61
min_col: 1
max_col: 10
target_cell_row_idx: 51
target_cell_col_idx: 3
target_cell_value: sh spanning-tree vlan 50 detail | in Number
formula: =INDIRECT("A"&ROW(A51)-1)