{
    "action": "tool_call",
    "reasoning": "The overview confirms this is an adverse event dataset with 1,191 events. To identify the most important metric and category, I need to understand what measures and dimensions are available. The card shows several classifiers (AESEV for severity, AESER for serious events, AEOUT for outcomes, AEREL for relationship to treatment) and temporal/spatial axes. I should first check if gold tables exist that might already contain key aggregations, as these would indicate what the dataset creators considered most important.",
    "tool": "get_gold_tables",
    "args": {}
}