{
    "action": "tool_call",
    "reasoning": "I have the top 50 perfect correlations (|r|=1.0), but the question asks for the 'most strongly correlated' columns overall. I should query for the highest absolute correlations across the full dataset to see the distribution and identify the strongest relationships, not just the perfect ones. I'll get the top correlations by absolute value to show the full spectrum of strong relationships.",
    "tool": "query_sql",
    "args": {
        "sql": "WITH parsed AS (SELECT id, tables_catalog_id, dataset_id, columns_json, matrix_json FROM raw.table_correlations), pairs AS (SELECT p.id, p.tables_catalog_id, p.dataset_id, JSON_EXTRACT_STRING(p.columns_json, CONCAT('$[', i.idx, ']')) AS col1, JSON_EXTRACT_STRING(p.columns_json, CONCAT('$[', j.idx, ']')) AS col2, CAST(JSON_EXTRACT_STRING(p.matrix_json, CONCAT('$[', i.idx, '][', j.idx, ']')) AS DOUBLE) AS correlation FROM parsed p CROSS JOIN (SELECT UNNEST(RANGE(0, 100)) AS idx) i CROSS JOIN (SELECT UNNEST(RANGE(0, 100)) AS idx) j WHERE i.idx < j.idx AND JSON_EXTRACT_STRING(p.columns_json, CONCAT('$[', i.idx, ']')) IS NOT NULL AND JSON_EXTRACT_STRING(p.columns_json, CONCAT('$[', j.idx, ']')) IS NOT NULL AND JSON_EXTRACT_STRING(p.matrix_json, CONCAT('$[', i.idx, '][', j.idx, ']')) IS NOT NULL) SELECT col1, col2, correlation, ABS(correlation) AS abs_corr FROM pairs WHERE correlation IS NOT NULL ORDER BY abs_corr DESC, correlation DESC LIMIT 50",
        "purpose": "Get the top 50 strongest correlations by absolute value to show the full distribution of correlation strengths",
        "source": "raw"
    }
}