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                                                               |
|---:|:----------------------------------------------------------------|:----------------------------------------------------------------|
| 67 | Port Mode                   1     access                 access | Port Mode                   1     access                 access |
| 68 | Allowed VLANs               -     332                    332    | Allowed VLANs               -     332                    332    |
| 69 | Local suspended VLANs       -     -                      -      | Local suspended VLANs       -     -                      -      |
| 70 | NX5010-1#                                                       | NX5010-2#                                                       |
| 71 |                                                                 |                                                                 |
| 72 | NX5010-1# sh vpc peer-keepalive                                 | NX5010-2# sh vpc peer-keepalive                                 |
| 73 | vPC keep-alive status           : peer is alive                 | vPC keep-alive status           : peer is alive                 |
| 74 | --Peer is alive for             : (872295) seconds, (490) msec  | --Peer is alive for             : (872236) seconds, (874) msec  |
| 75 | #NAME?                                                          | #NAME?                                                          |
| 76 | --Last send at                  : 2012.04.17 09:47:44 430 ms    | --Last send at                  : 2012.04.17 06:47:23 509 ms    |
| 77 | [Target Cell]                                                   | #NAME?                                                          |
| 78 | #NAME?                                                          | #NAME?                                                          |
| 79 | --Last receive at               : 2012.04.17 09:47:44 764 ms    | --Last receive at               : 2012.04.17 06:47:23 152 ms    |
| 80 | #NAME?                                                          | #NAME?                                                          |
| 81 | --Last update from peer         : (0) seconds, (492) msec       | --Last update from peer         : (0) seconds, (537) msec       |
| 82 |                                                                 |                                                                 |
| 83 | vPC Keep-alive parameters                                       | vPC Keep-alive parameters                                       |
| 84 | --Destination                   : 172.X.Y.16                    | --Destination                   : 172.X.Y.15                    |
| 85 | --Keepalive interval            : 1000 msec                     | --Keepalive interval            : 1000 msec                     |
| 86 | --Keepalive timeout             : 5 seconds                     | --Keepalive timeout             : 5 seconds                     |
| 87 | --Keepalive hold timeout        : 3 seconds                     | --Keepalive hold timeout        : 3 seconds                     |



min_row: 67
max_row: 87
min_col: 1
max_col: 2
target_cell_row_idx: 77
target_cell_col_idx: 1
target_cell_value: #NAME?
formula: =--Sent on interface             : mgmt0