```json { "action": "tool_call", "reasoning": "The dataset is a polling survey with 105 rows representing question-response combinations. To understand natural segmentation, I need to see the actual structure: how many unique questions exist, how responses are distributed, and whether records represent individual respondents or aggregated survey results. The card shows ~16 distinct questions and ~64 distinct responses. Let me examine the data structure to understand if records are individual responses, cross-tabulations, or aggregated breakdowns.", "tool": "query_sql", "args": { "sql": "SELECT COUNT(*) as total_rows, COUNT(DISTINCT Question) as unique_questions, COUNT(DISTINCT Response) as unique_responses, COUNT(DISTINCT question_number) as unique_question_numbers, MIN(question_number) as min_q_num, MAX(question_number) as max_q_num FROM raw.polling_on_ai_usage_jul_2026", "purpose": "Understand the basic structure: how many questions, responses, and whether question_number provides a natural grouping", "source": "raw" } } ```