{
    "action": "tool_call",
    "reasoning": "To identify the most interesting analytical questions, I need to understand what dimensions and relationships exist beyond what I've already seen. I should check if there are viable join paths between tables (despite the card saying 'none'), and examine the products table to understand the product dimension better. Let me start by looking at products to see what analytical angles exist there.",
    "tool": "inspect_columns",
    "args": {
        "table": "products"
    }
}