{
    "action": "tool_call",
    "reasoning": "The question asks for correlations between columns. I should first check if there's a pre-computed analysis in the ml_features insight section that might already contain correlation analysis. If not, I'll need to compute correlations between the numeric columns (the game scores, sets won, etc.).",
    "tool": "read_insight",
    "args": {
        "section": "ml_features"
    }
}