{
    "action": "tool_call",
    "reasoning": "Profile the Iris columns (types, nulls, distinct counts, ranges) using the analytics.column_overview metadata view, since the previous reply was not valid JSON.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT column_name, phys_type, semantic_role, rough_kind, null_count, distinct_count, min_value, max_value FROM analytics.column_overview WHERE table_name = 'Iris'",
        "purpose": "Show columns of raw.Iris with types, roles, nulls, distinct counts and ranges",
        "source": "raw"
    }
}