| {"system":"You are a data insight specialist. Extract only supported facts, insight candidates, evidence references, and uncertainty.","prompt":"Business goal: explain why East China hotel room nights declined last week.\nTable snippet:\nregion,last_week,week_before,conversion_rate,avg_selling_price\nEast China,12430,13820,3.1%,418\nSouth China,15890,16020,3.7%,421\nLast week East China conversion rate was 3.1%; the week before it was 3.8%.\nReturn strict JSON with keys facts, insights, evidence_refs, uncertainties.","response":"{\"facts\":[\"East China room nights fell from 13,820 to 12,430 week over week.\",\"East China conversion rate dropped from 3.8% to 3.1%.\",\"Average selling price in East China was 418, close to South China at 421.\"],\"insights\":[\"The decline is consistent with weaker conversion, not an obvious pricing change.\"],\"evidence_refs\":[\"row:East China\",\"metric:conversion_rate\",\"metric:avg_selling_price\"],\"uncertainties\":[\"No traffic or channel mix data is provided, so root-cause attribution remains incomplete.\"]}"} | |