{
    "action": "tool_call",
    "reasoning": "The previous query failed because it tried to REPLACE on the Score column, but the error shows Score contains values like '10%' (not '$' prefixed). I need to inspect the actual data types and sample values to understand what the columns contain before attempting aggregations. Let me look at the raw data first to see what we're working with.",
    "tool": "query_sql",
    "purpose": "Sample raw data to understand the actual values and structure",
    "args": {
        "sql": "SELECT * FROM raw.\"Dummy Data\" LIMIT 8",
        "purpose": "Examine actual data values to understand column content and identify the most meaningful metric and category"
    }
}