{
    "action": "tool_call",
    "reasoning": "The previous query failed due to a type mismatch (comparing VARCHAR to INTEGER). I need to inspect the TRTDURD column to understand its actual type before writing corrected SQL. The card shows TRTDURD as a measure but doesn't specify if it's numeric or text. I'll check the column details first.",
    "tool": "inspect_columns",
    "args": {
        "table": "adsl",
        "columns": [
            "TRTDURD",
            "AGE",
            "RFSTDTC",
            "RFENDTC",
            "RFXSTDTC",
            "RFXENDTC",
            "DTHDTC",
            "DMDTC"
        ]
    }
}