{
    "action": "tool_call",
    "reasoning": "I have comprehensive evidence about China's dominance (69 medals, 56.5% gold rate), South Korea's bronze-heavy profile (66.7% bronze rate), and the evolution of events over time. However, to identify the MOST surprising finding, I need to examine one more dimension that stands out from the evidence: South Korea's dramatic shift from early success (2 golds in 1988) to becoming almost exclusively a bronze medal nation. Let me verify the timing and magnitude of this shift by looking at South Korea's gold medal wins across all years to see when they stopped winning golds.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT year, event, gender, medal, medalist FROM raw.olympic_table_tennis_medals_1988_2024 WHERE country = 'South Korea' AND medal = 'Gold' ORDER BY year",
        "purpose": "Identify when South Korea won their gold medals to understand the timing of their shift from gold contender to bronze specialist",
        "source": "raw"
    }
}