{
    "action": "tool_call",
    "reasoning": "I have good evidence on sector, GPU supplier, country, certainty, and compute scale distributions. To complete the segmentation analysis, I should examine the chip type distribution since it's a key technical dimension with 36 distinct values. I'll also check temporal patterns more granularly and look at the 'Noteworthy' flag which appears in only 9 of 482 systems.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT \"Chip type (primary)\" as chip_type, COUNT(*) as system_count, ROUND(AVG(\"Max OP/s (log)\"), 2) as avg_compute_log, ROUND(AVG(\"Calculated Cost\"), 0) as avg_cost FROM raw.ai_supercomputers WHERE \"Chip type (primary)\" IS NOT NULL GROUP BY \"Chip type (primary)\" ORDER BY system_count DESC LIMIT 20",
        "purpose": "Examine chip type distribution to understand technical segmentation - this is a key hardware dimension with 36 variants"
    }
}