{
    "action": "tool_call",
    "reasoning": "To identify the most interesting analytical questions, I need to understand the dataset's topology and relationships. The overview shows beer_ratings is isolated despite being 85% of the data. I should examine what relationships DO exist to understand what cross-table analyses are actually possible.",
    "tool": "read_insight",
    "args": {
        "section": "relationships"
    }
}