{
    "action": "tool_call",
    "reasoning": "I have strong evidence of natural segmentation dimensions from the results so far: result (win_A/win_B/draw), decision types (10 categories), stance matchups (3 main patterns), age groups, weight classes, and experience levels. However, I should check if there are temporal patterns (dates/years) or geographic dimensions that could also provide natural groupings. Let me inspect the columns to see if there are any date, location, or other categorical fields I haven't explored yet.",
    "tool": "inspect_columns",
    "args": {
        "table": "boxing_matches"
    }
}